528:
333:
305:
556:
104:
542:
340:
312:
449:
from the Poison Canyon
Formation. In addition, river channel deposits in the Raton Formation are up to six times wider and five times deeper than river channels in the Poison Canyon Formation, and the channels in the Poison River Formation tend to be isolated and lack any sheet-like amalgamation.
444:
with and partially replaces the Raton
Formation. The two are distinguished by color (the Raton Formation is gray and the Poison Canyon Formation is yellow to orange), by the absence of arkosic sandstone in the Raton Formation, and by the absence of
2862:
2007:
1474:
978:
714:
Cullers, Robert L. (June 1995). "The controls on the major- and trace-element evolution of shales, siltstones and sandstones of
Ordovician to tertiary age in the Wet Mountains region, Colorado, U.S.A.".
2869:
2014:
1481:
1442:
985:
2420:
2253:
1261:
2557:
2456:
2380:
1437:
1171:
2153:
1747:
2478:
2360:
2258:
1298:
1208:
1196:
943:
2605:
2158:
2143:
1808:
1624:
1544:
1370:
512:
The unit was first named as the "Poison Canyon conglomerates" by R.C. Hills in 1888. Hills later clarified the definition, separating the uppermost beds of his
2585:
2430:
2365:
2228:
1706:
1415:
1166:
2483:
2193:
2163:
1604:
1318:
1161:
1115:
1079:
569:
2702:
2400:
2355:
2288:
1674:
1405:
1276:
2956:
2855:
2707:
2662:
2635:
2600:
2590:
2498:
2283:
2248:
2203:
2173:
1589:
1271:
2826:
2821:
2799:
2763:
2473:
2468:
2390:
2370:
2350:
2263:
2223:
2178:
2168:
2086:
2081:
1954:
1949:
2493:
2395:
2000:
1619:
1584:
1281:
1191:
2930:
1785:
1780:
1649:
1467:
971:
304:
1308:
936:
332:
3006:
929:
667:"Decreased Channel Dimensions and Sediment Flux Through the Paleocene Raton-Wilcox Rivers: Implications for Wilcox Shelf Margin"
257:
190:
851:"Evidence of Sulfate-Dependent Anaerobic Methane Oxidation within an Area Impacted by Coalbed Methane-Related Gas Migration"
440:, with the transition often very gradual, up to 150 feet (46 m). In the western part of the Raton Basin, the formation
666:
691:
Flores, R.M.; Bader, L.R. (1999). "A summary of
Tertiary coal resources of the Raton basin, Colorado and New Mexico".
633:"Sedimentology of Upper Cretaceous and Tertiary siliciclastics and coals in the Raton Basin, New Mexico and Colorado"
599:"Cretaceous and Paleocene rocks of the Raton Basin, New Mexico and Colorado--Stratigraphic-environmental framework"
632:
598:
183:
3001:
2238:
1564:
492:
The Poison Canyon
Formation contains sparse fossilized plant remains characteristic of the Paleocene.
1654:
2508:
1156:
574:
120:
2312:
1684:
1664:
751:
1701:
418:
819:
2972:
2385:
1549:
1390:
1333:
1186:
1151:
533:
2918:
2278:
2233:
2218:
1594:
1395:
1385:
1176:
862:
724:
501:
461:
8:
2503:
2440:
2268:
2076:
1944:
1927:
1883:
1574:
1569:
1400:
561:
366:
866:
728:
2328:
2183:
2116:
1967:
1901:
1790:
1742:
1644:
1599:
1420:
1410:
1328:
1323:
1244:
1181:
1138:
1120:
1084:
952:
883:
850:
109:
2804:
2782:
2768:
2746:
2739:
2689:
2657:
2649:
2410:
2375:
2243:
2188:
1823:
1813:
1775:
1752:
1679:
1634:
1614:
1554:
1375:
1348:
1303:
1266:
1039:
888:
736:
454:
130:
906:
Hills, R.C. (1890). "Orographic and structural features of Rocky
Mountain geology".
2940:
2672:
2628:
2580:
2513:
2425:
2405:
2333:
2213:
2198:
2138:
2121:
1856:
1818:
1770:
1737:
1693:
1669:
1534:
1527:
1380:
1365:
878:
870:
803:
798:
790:
732:
696:
2640:
2595:
2570:
2488:
2415:
2345:
2273:
2208:
2148:
1866:
1762:
1609:
1343:
1256:
921:
820:"Geohydrologic setting of the environment near Cotter Mill, Canon City, Colorado"
547:
477:
469:
437:
382:
140:
2902:
2575:
2540:
2293:
1911:
1896:
1848:
1800:
1729:
1579:
1130:
781:
Brown, R.W. (1962). "Paleocene flora of the Rocky
Mountains and great Plains".
752:"Geology and coal deposits of the Raton coal field, Colfax County, New Mexico"
2995:
2303:
2069:
1539:
1313:
473:
272:
259:
239:
205:
192:
62:
27:
874:
1659:
1629:
1559:
892:
441:
103:
2893:
2884:
2681:
2449:
2029:
1639:
1496:
1031:
1000:
410:
370:
37:
2791:
2619:
2099:
1518:
1022:
513:
433:. The total thickness of the formation is up to 650 feet (200 m).
422:
378:
229:
82:
47:
2730:
2549:
2060:
2040:
1920:
1357:
1228:
1217:
1107:
481:
465:
406:
398:
386:
171:
163:
87:
700:
2949:
2721:
2531:
2321:
2108:
1837:
1720:
1507:
1237:
1071:
1062:
1011:
956:
402:
374:
225:
167:
77:
72:
57:
52:
42:
794:
2755:
2051:
1875:
1098:
1053:
430:
414:
92:
67:
480:(where the formation partially replaces the Raton Formation) to
2911:
1936:
1291:
2877:
2022:
1489:
993:
446:
426:
500:
The formation is a significant freshwater aquifer in the
664:
476:
uplift to the north and northwest. Its age ranges from
665:
Zhang, J.; Steel, R.; Ambrose, W.; Fisher, W. (2015).
849:
Wolfe, Amy L.; Wilkin, Richard T. (7 February 2017).
640:
New Mexico
Geological Society Field Conference Series
606:
New Mexico
Geological Society Field Conference Series
570:
List of fossiliferous stratigraphic units in
Colorado
592:
590:
523:
951:
587:
2993:
597:Pillmore, Charles L.; Flores, Romeo M. (1990).
339:
311:
16:Geological formation in Colorado and New Mexico
596:
397:The Poison Canyon Formation consists of thick
2863:
2008:
1475:
979:
937:
848:
690:
507:
319:Poison Canyon Formation (the United States)
2878:Precambrian chronostratigraphy of Colorado
2870:
2856:
2015:
2001:
1482:
1468:
986:
972:
944:
930:
453:The Poison Canyon Formation underlies the
102:
882:
802:
783:U.S. Geological Survey Professional Paper
693:U.S. Geological Survey Professional Paper
457:in the northern part of the Raton Basin.
2023:Paleozoic chronostratigraphy of Colorado
749:
1490:Mesozoic chronostratigraphy of Colorado
994:Cenozoic chronostratigraphy of Colorado
908:Colorado Scientific Society Proceedings
713:
381:. The formation was deposited from the
2994:
855:Environmental Science & Technology
817:
630:
2851:
1996:
1463:
967:
925:
905:
780:
671:AAPG Annual Convention and Exhibition
495:
409:. It is found throughout most of the
1526:
436:The formation grades below into the
13:
3007:Paleogene formations of New Mexico
421:. The mudstone and siltstone beds
347:Poison Canyon Formation (Colorado)
14:
3018:
554:
540:
526:
472:uplift to the southwest and the
338:
331:
310:
303:
35:
1443:Independence Mountain Formation
899:
842:
811:
774:
743:
707:
684:
658:
624:
392:
1:
2421:Morgan Round Valley Formation
580:
322:Show map of the United States
2254:South Canyon Creek Formation
737:10.1016/0009-2541(95)00050-V
7:
519:
516:to the Huerfano Formation.
429:, and are not resistant to
10:
3023:
2239:Sangre de Cristo Formation
1262:Central Colorado Volcanics
487:
401:beds separated by beds of
2948:
2939:
2910:
2901:
2892:
2883:
2847:
2790:
2781:
2754:
2738:
2729:
2720:
2680:
2671:
2648:
2627:
2618:
2558:Williams Canyon Formation
2548:
2539:
2530:
2464:
2457:Williams Canyon Formation
2448:
2439:
2381:Jacque Mountain Formation
2320:
2311:
2302:
2107:
2098:
2068:
2059:
2050:
2039:
2028:
1992:
1935:
1919:
1910:
1874:
1865:
1847:
1836:
1799:
1761:
1728:
1719:
1692:
1655:Pictured Cliffs Formation
1517:
1506:
1495:
1459:
1438:Gravel Mountain Formation
1356:
1290:
1236:
1227:
1216:
1129:
1106:
1097:
1070:
1061:
1052:
1030:
1021:
1010:
999:
963:
631:Flores, Romeo M. (1987).
297:
289:
250:
245:
235:
221:
182:
177:
159:
154:
146:
136:
126:
116:
101:
33:late Cretaceous–Paleocene
26:
21:
2509:Ste. Genevieve Formation
1172:Martins Canyon Formation
1157:Cedar Mountain Formation
575:Paleontology in Colorado
508:History of investigation
2154:Council Grove Formation
1748:Ralston Creek Formation
1685:Williams Fork Formation
1665:Point Lookout Formation
1339:Poison Canyon Formation
875:10.1021/acs.est.6b03709
804:2027/coo.31924002995300
750:Pillmore, C.L. (1969).
425:to yellow, are rich in
363:Poison Canyon Formation
22:Poison Canyon Formation
2479:Headscrabble Formation
2361:Eagle Valley Evaporite
2259:Stone Corral Formation
1702:Burro Canyon Formation
1299:Blanco Basin Formation
1209:Grouse Mountain Basalt
1197:Wagon Tongue Formation
824:The Mountain Geologist
785:. Professional Paper.
756:The Mountain Geologist
695:. 1625-A. Chapter SR.
417:and coarse-grained to
2973:Uncompahgre Formation
2606:Pinyon Park Formation
2386:Kansas City Formation
2159:Crestone Conglomerate
2144:Cedar Hills Formation
1809:Glen Canyon Formation
1625:Lion Canyon Formation
1550:Cliff House Sandstone
1545:Castle Gate Formation
1391:Middle Park Formation
1371:Arapahoe Conglomerate
1334:Green River Formation
1187:Troublesome Formation
1152:Browns Park Formation
818:Alther, G.R. (1977).
534:Earth sciences portal
150:650 feet (200 m)
2919:Uinta Mountain Group
2586:Kinderhook Formation
2431:Sharpsdale Formation
2366:Glen Eyrie Formation
2279:Wellington Formation
2234:Phosphoria Formation
2229:Owl Canyon Formation
2219:Minnekahta Formation
1707:Horsetooth Formation
1416:South Park Formation
1396:Nacimiento Formation
1386:Fort Union Formation
1177:North Park Formation
1167:Los Pintos Formation
502:Canon City, Colorado
350:Show map of Colorado
108:Rocks in Colorado's
2504:St. Louis Formation
2484:Leadville Formation
2269:Wabaunsee Formation
2194:Ingleside Formation
2164:Day Creek Formation
2077:Chugwater Formation
1945:Chugwater Formation
1928:Chugwater Formation
1884:Chugwater Formation
1605:Kremmling Formation
1575:Fruitland Formation
1570:Fox Hills Formation
1565:Fort Hays Limestone
1401:Ojo Alamo Formation
1319:Echo Park Formation
1162:Flat Tops Volcanics
1116:Dry Union Formation
1080:Dry Union Formation
867:2017EnST...51.1901W
729:1995ChGeo.123..107C
562:Paleontology portal
413:. The sandstone is
269: /
202: /
28:Stratigraphic range
3002:Paleogene Colorado
2703:Arbuckle Formation
2401:Marmaton Formation
2356:Cherokee Formation
2329:Fountain Formation
2289:Wolfcamp Formation
2184:Glorieta Formation
2117:Fountain Formation
1968:Moenkopi Formation
1902:Moenkopi Formation
1791:Sundance Formation
1743:Morrison Formation
1675:Trinidad Formation
1645:Niobrara Formation
1600:Kirtland Formation
1421:Washakie Formation
1411:San Jose Formation
1406:Raton Conglomerate
1329:Huerfano Formation
1324:Farisita Formation
1277:Pinnacle Formation
1245:Arikaree Formation
1182:Santa Fe Formation
1139:Arikaree Formation
1121:Ogallala Formation
1085:Ogallala Formation
953:Chronostratigraphy
496:Economic resources
367:geologic formation
273:37.524°N 105.075°W
206:37.524°N 105.075°W
110:Lathrop State Park
2989:
2988:
2985:
2984:
2981:
2980:
2968:
2967:
2964:
2963:
2957:Owiyukuts Complex
2926:
2925:
2843:
2842:
2839:
2838:
2835:
2834:
2817:
2816:
2813:
2812:
2805:Sawatch Formation
2777:
2776:
2769:Sawatch Formation
2747:Dotsero Formation
2716:
2715:
2708:Manitou Formation
2698:
2697:
2690:Dotsero Formation
2663:Simpson Formation
2658:Harding Sandstone
2636:Fremont Limestone
2614:
2613:
2601:Parting Formation
2591:Misener Formation
2566:
2565:
2526:
2525:
2522:
2521:
2499:Spergen Formation
2411:Minturn Formation
2376:Hermosa Formation
2341:
2340:
2284:White Horse Group
2249:Shawnee Formation
2244:Satanka Formation
2204:Lansing Formation
2189:Hermosa Formation
2174:Forelle Formation
2134:
2133:
2130:
2129:
2094:
2093:
1988:
1987:
1984:
1983:
1980:
1979:
1976:
1975:
1963:
1962:
1892:
1891:
1832:
1831:
1824:Wingate Sandstone
1814:Kayenta Formation
1776:Entrada Formation
1753:Wanakah Formation
1715:
1714:
1680:Vermejo Formation
1635:Menefee Formation
1615:Laramie Formation
1590:Hygiene Formation
1455:
1454:
1451:
1450:
1433:
1432:
1429:
1428:
1376:Bridger Formation
1349:Wasatch Formation
1304:Cuchara Formation
1272:Conejos Formation
1267:Chadron Formation
1252:
1251:
1205:
1204:
1147:
1146:
1093:
1092:
1048:
1047:
1040:Alamosa Formation
455:Cuchara Formation
359:
358:
131:Cuchara Formation
3014:
2946:
2945:
2908:
2907:
2899:
2898:
2890:
2889:
2872:
2865:
2858:
2849:
2848:
2827:Tintic Formation
2822:Reagan Formation
2800:Lodore Formation
2788:
2787:
2764:Lodore Formation
2736:
2735:
2727:
2726:
2678:
2677:
2625:
2624:
2581:Elbert Formation
2546:
2545:
2537:
2536:
2514:Warsaw Formation
2474:Gilman Formation
2469:Beulah Formation
2446:
2445:
2426:Morrow Formation
2406:Maroon Formation
2391:Kerber Formation
2371:Gothic Formation
2351:Belden Formation
2334:Madera Formation
2318:
2317:
2309:
2308:
2264:Sumner Formation
2224:Opeche Formation
2214:Maroon Formation
2199:Kaibab Limestone
2179:Glendo Formation
2169:Falcon Formation
2139:Blaine Formation
2122:Madera Formation
2105:
2104:
2087:Taloga Formation
2082:Lykins Formation
2066:
2065:
2057:
2056:
2048:
2047:
2043:
2037:
2036:
2032:
2017:
2010:
2003:
1994:
1993:
1955:Taloga Formation
1950:Lykins Formation
1917:
1916:
1872:
1871:
1857:Chinle Formation
1845:
1844:
1840:
1819:Navajo Formation
1771:Carmel Formation
1738:Curtis Formation
1726:
1725:
1670:Smoky Hill Chalk
1555:Codell Sandstone
1535:Benton Formation
1524:
1523:
1515:
1514:
1510:
1504:
1503:
1499:
1484:
1477:
1470:
1461:
1460:
1381:Denver Formation
1366:Animas Formation
1234:
1233:
1225:
1224:
1220:
1104:
1103:
1068:
1067:
1059:
1058:
1028:
1027:
1019:
1018:
1014:
1008:
1007:
1003:
988:
981:
974:
965:
964:
946:
939:
932:
923:
922:
916:
915:
903:
897:
896:
886:
861:(3): 1901–1909.
846:
840:
839:
837:
835:
815:
809:
808:
806:
778:
772:
771:
769:
767:
747:
741:
740:
717:Chemical Geology
711:
705:
704:
688:
682:
681:
679:
677:
662:
656:
655:
653:
651:
637:
628:
622:
621:
619:
617:
603:
594:
564:
559:
558:
557:
550:
545:
544:
543:
536:
531:
530:
529:
514:measured section
351:
342:
341:
335:
323:
314:
313:
307:
284:
283:
281:
280:
279:
278:37.524; -105.075
274:
270:
267:
266:
265:
262:
217:
216:
214:
213:
212:
211:37.524; -105.075
207:
203:
200:
199:
198:
195:
106:
97:
34:
19:
18:
3022:
3021:
3017:
3016:
3015:
3013:
3012:
3011:
2992:
2991:
2990:
2977:
2960:
2935:
2922:
2879:
2876:
2831:
2809:
2773:
2750:
2712:
2694:
2667:
2644:
2641:Viola Formation
2610:
2596:Ouray Formation
2571:Aneth Formation
2562:
2518:
2494:Osage Formation
2489:Molas Formation
2460:
2435:
2416:Molas Formation
2396:Keyes Formation
2346:Atoka Formation
2337:
2298:
2274:Weber Formation
2209:Lyons Formation
2149:Chase Formation
2126:
2090:
2041:
2030:
2024:
2021:
1972:
1959:
1931:
1906:
1888:
1861:
1838:
1828:
1795:
1757:
1711:
1688:
1620:Lewis Formation
1610:Lance Formation
1585:Greenhorn Shale
1508:
1497:
1491:
1488:
1447:
1425:
1352:
1344:Uinta Formation
1286:
1282:Pitch Formation
1257:Brule Formation
1248:
1218:
1212:
1201:
1192:Trump Formation
1143:
1125:
1089:
1044:
1012:
1001:
995:
992:
959:
950:
920:
919:
904:
900:
847:
843:
833:
831:
816:
812:
779:
775:
765:
763:
748:
744:
712:
708:
701:10.3133/pp1625A
689:
685:
675:
673:
663:
659:
649:
647:
635:
629:
625:
615:
613:
601:
595:
588:
583:
560:
555:
553:
548:Colorado portal
546:
541:
539:
532:
527:
525:
522:
510:
498:
490:
478:late Cretaceous
438:Raton Formation
395:
383:late Cretaceous
355:
354:
353:
352:
349:
348:
345:
344:
343:
326:
325:
324:
321:
320:
317:
316:
315:
277:
275:
271:
268:
263:
260:
258:
256:
255:
254:Poison Canyon (
210:
208:
204:
201:
196:
193:
191:
189:
188:
141:Raton Formation
112:
96:
95:
90:
85:
80:
75:
70:
65:
60:
55:
50:
45:
40:
32:
31:
17:
12:
11:
5:
3020:
3010:
3009:
3004:
2987:
2986:
2983:
2982:
2979:
2978:
2976:
2975:
2969:
2966:
2965:
2962:
2961:
2959:
2954:
2952:
2943:
2937:
2936:
2934:
2933:
2931:Tava Formation
2927:
2924:
2923:
2921:
2916:
2914:
2905:
2896:
2887:
2881:
2880:
2875:
2874:
2867:
2860:
2852:
2845:
2844:
2841:
2840:
2837:
2836:
2833:
2832:
2830:
2829:
2824:
2818:
2815:
2814:
2811:
2810:
2808:
2807:
2802:
2796:
2794:
2785:
2779:
2778:
2775:
2774:
2772:
2771:
2766:
2760:
2758:
2752:
2751:
2749:
2744:
2742:
2733:
2724:
2718:
2717:
2714:
2713:
2711:
2710:
2705:
2699:
2696:
2695:
2693:
2692:
2686:
2684:
2675:
2669:
2668:
2666:
2665:
2660:
2654:
2652:
2646:
2645:
2643:
2638:
2633:
2631:
2622:
2616:
2615:
2612:
2611:
2609:
2608:
2603:
2598:
2593:
2588:
2583:
2578:
2576:Dyer Formation
2573:
2567:
2564:
2563:
2561:
2560:
2554:
2552:
2543:
2534:
2528:
2527:
2524:
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2506:
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2496:
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2338:
2336:
2331:
2326:
2324:
2315:
2306:
2300:
2299:
2297:
2296:
2294:Yeso Formation
2291:
2286:
2281:
2276:
2271:
2266:
2261:
2256:
2251:
2246:
2241:
2236:
2231:
2226:
2221:
2216:
2211:
2206:
2201:
2196:
2191:
2186:
2181:
2176:
2171:
2166:
2161:
2156:
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2146:
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2135:
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2128:
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2119:
2113:
2111:
2102:
2096:
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2079:
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2063:
2054:
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2026:
2025:
2020:
2019:
2012:
2005:
1997:
1990:
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1986:
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1982:
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1964:
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1939:
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1930:
1925:
1923:
1914:
1908:
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1904:
1899:
1897:Jelm Formation
1893:
1890:
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1886:
1880:
1878:
1869:
1863:
1862:
1860:
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1853:
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1826:
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1816:
1811:
1805:
1803:
1797:
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1788:
1786:Page Formation
1783:
1781:Garo Formation
1778:
1773:
1767:
1765:
1759:
1758:
1756:
1755:
1750:
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1696:
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1672:
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1662:
1657:
1652:
1650:Pando Porphyry
1647:
1642:
1637:
1632:
1627:
1622:
1617:
1612:
1607:
1602:
1597:
1592:
1587:
1582:
1580:Graneros Shale
1577:
1572:
1567:
1562:
1557:
1552:
1547:
1542:
1537:
1532:
1530:
1521:
1512:
1501:
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1464:
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1316:
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1296:
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1214:
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1206:
1203:
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1199:
1194:
1189:
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1179:
1174:
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1154:
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1144:
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1135:
1133:
1127:
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1123:
1118:
1112:
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1101:
1095:
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1050:
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1025:
1016:
1005:
997:
996:
991:
990:
983:
976:
968:
961:
960:
949:
948:
941:
934:
926:
918:
917:
898:
841:
810:
773:
742:
706:
683:
657:
623:
585:
584:
582:
579:
578:
577:
572:
566:
565:
551:
537:
521:
518:
509:
506:
497:
494:
489:
486:
460:The formation
394:
391:
357:
356:
346:
337:
336:
330:
329:
328:
327:
318:
309:
308:
302:
301:
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286:
252:
248:
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242:
237:
233:
232:
223:
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218:
186:
180:
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175:
174:
161:
157:
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151:
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138:
134:
133:
128:
124:
123:
118:
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113:
107:
99:
98:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
41:
36:
24:
23:
15:
9:
6:
4:
3:
2:
3019:
3008:
3005:
3003:
3000:
2999:
2997:
2974:
2971:
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2958:
2955:
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2932:
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2920:
2917:
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2897:
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2886:
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2873:
2868:
2866:
2861:
2859:
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2853:
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2825:
2823:
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2819:
2806:
2803:
2801:
2798:
2797:
2795:
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2789:
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2784:
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2770:
2767:
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2762:
2761:
2759:
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2753:
2748:
2745:
2743:
2741:
2737:
2734:
2732:
2728:
2725:
2723:
2719:
2709:
2706:
2704:
2701:
2700:
2691:
2688:
2687:
2685:
2683:
2679:
2676:
2674:
2670:
2664:
2661:
2659:
2656:
2655:
2653:
2651:
2647:
2642:
2639:
2637:
2634:
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2630:
2626:
2623:
2621:
2617:
2607:
2604:
2602:
2599:
2597:
2594:
2592:
2589:
2587:
2584:
2582:
2579:
2577:
2574:
2572:
2569:
2568:
2559:
2556:
2555:
2553:
2551:
2547:
2544:
2542:
2538:
2535:
2533:
2529:
2515:
2512:
2510:
2507:
2505:
2502:
2500:
2497:
2495:
2492:
2490:
2487:
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2482:
2480:
2477:
2475:
2472:
2470:
2467:
2466:
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2427:
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2419:
2417:
2414:
2412:
2409:
2407:
2404:
2402:
2399:
2397:
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2387:
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2379:
2377:
2374:
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2364:
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2359:
2357:
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2344:
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2332:
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2327:
2325:
2323:
2319:
2316:
2314:
2310:
2307:
2305:
2301:
2295:
2292:
2290:
2287:
2285:
2282:
2280:
2277:
2275:
2272:
2270:
2267:
2265:
2262:
2260:
2257:
2255:
2252:
2250:
2247:
2245:
2242:
2240:
2237:
2235:
2232:
2230:
2227:
2225:
2222:
2220:
2217:
2215:
2212:
2210:
2207:
2205:
2202:
2200:
2197:
2195:
2192:
2190:
2187:
2185:
2182:
2180:
2177:
2175:
2172:
2170:
2167:
2165:
2162:
2160:
2157:
2155:
2152:
2150:
2147:
2145:
2142:
2140:
2137:
2136:
2123:
2120:
2118:
2115:
2114:
2112:
2110:
2106:
2103:
2101:
2097:
2088:
2085:
2083:
2080:
2078:
2075:
2073:
2071:
2070:Changhsingian
2067:
2064:
2062:
2058:
2055:
2053:
2049:
2046:
2044:
2038:
2035:
2033:
2027:
2018:
2013:
2011:
2006:
2004:
1999:
1998:
1995:
1991:
1969:
1966:
1965:
1956:
1953:
1951:
1948:
1946:
1943:
1942:
1940:
1938:
1934:
1929:
1926:
1924:
1922:
1918:
1915:
1913:
1909:
1903:
1900:
1898:
1895:
1894:
1885:
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1879:
1877:
1873:
1870:
1868:
1864:
1858:
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1846:
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1841:
1835:
1825:
1822:
1820:
1817:
1815:
1812:
1810:
1807:
1806:
1804:
1802:
1798:
1792:
1789:
1787:
1784:
1782:
1779:
1777:
1774:
1772:
1769:
1768:
1766:
1764:
1760:
1754:
1751:
1749:
1746:
1744:
1741:
1739:
1736:
1735:
1733:
1731:
1727:
1724:
1722:
1718:
1708:
1705:
1703:
1700:
1699:
1697:
1695:
1691:
1686:
1683:
1681:
1678:
1676:
1673:
1671:
1668:
1666:
1663:
1661:
1658:
1656:
1653:
1651:
1648:
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1643:
1641:
1638:
1636:
1633:
1631:
1628:
1626:
1623:
1621:
1618:
1616:
1613:
1611:
1608:
1606:
1603:
1601:
1598:
1596:
1593:
1591:
1588:
1586:
1583:
1581:
1578:
1576:
1573:
1571:
1568:
1566:
1563:
1561:
1558:
1556:
1553:
1551:
1548:
1546:
1543:
1541:
1540:Carlile Shale
1538:
1536:
1533:
1531:
1529:
1525:
1522:
1520:
1516:
1513:
1511:
1505:
1502:
1500:
1494:
1485:
1480:
1478:
1473:
1471:
1466:
1465:
1462:
1458:
1444:
1441:
1439:
1436:
1435:
1422:
1419:
1417:
1414:
1412:
1409:
1407:
1404:
1402:
1399:
1397:
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1389:
1387:
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1382:
1379:
1377:
1374:
1372:
1369:
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1364:
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1359:
1355:
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1347:
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1342:
1340:
1337:
1335:
1332:
1330:
1327:
1325:
1322:
1320:
1317:
1315:
1314:Dawson Arkose
1312:
1310:
1307:
1305:
1302:
1300:
1297:
1295:
1293:
1289:
1283:
1280:
1278:
1275:
1273:
1270:
1268:
1265:
1263:
1260:
1258:
1255:
1254:
1246:
1243:
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1239:
1235:
1232:
1230:
1226:
1223:
1221:
1215:
1210:
1207:
1198:
1195:
1193:
1190:
1188:
1185:
1183:
1180:
1178:
1175:
1173:
1170:
1168:
1165:
1163:
1160:
1158:
1155:
1153:
1150:
1149:
1140:
1137:
1136:
1134:
1132:
1128:
1122:
1119:
1117:
1114:
1113:
1111:
1109:
1105:
1102:
1100:
1096:
1086:
1083:
1081:
1078:
1077:
1075:
1073:
1069:
1066:
1064:
1060:
1057:
1055:
1051:
1041:
1038:
1037:
1035:
1033:
1029:
1026:
1024:
1020:
1017:
1015:
1009:
1006:
1004:
998:
989:
984:
982:
977:
975:
970:
969:
966:
962:
958:
954:
947:
942:
940:
935:
933:
928:
927:
924:
914:(3): 362–458.
913:
909:
902:
894:
890:
885:
880:
876:
872:
868:
864:
860:
856:
852:
845:
829:
825:
821:
814:
805:
800:
796:
795:10.3133/pp375
792:
788:
784:
777:
761:
757:
753:
746:
738:
734:
730:
726:
722:
718:
710:
702:
698:
694:
687:
672:
668:
661:
645:
641:
634:
627:
611:
607:
600:
593:
591:
586:
576:
573:
571:
568:
567:
563:
552:
549:
538:
535:
524:
517:
515:
505:
503:
493:
485:
483:
479:
475:
474:Wet Mountains
471:
467:
463:
458:
456:
451:
448:
443:
439:
434:
432:
428:
424:
420:
419:conglomeratic
416:
412:
408:
404:
400:
390:
388:
384:
380:
376:
372:
368:
364:
334:
306:
296:
292:
288:
282:
253:
249:
244:
241:
240:United States
238:
234:
231:
227:
224:
220:
215:
187:
185:
181:
176:
173:
169:
165:
162:
158:
153:
149:
145:
142:
139:
135:
132:
129:
125:
122:
119:
115:
111:
105:
100:
94:
89:
84:
79:
74:
69:
64:
59:
54:
49:
44:
39:
29:
25:
20:
1660:Pierre Shale
1630:Mancos Shale
1560:Dakota Group
1338:
911:
907:
901:
858:
854:
844:
832:. Retrieved
827:
823:
813:
786:
782:
776:
764:. Retrieved
762:(3): 125–142
759:
755:
745:
723:(1–4): 110.
720:
716:
709:
692:
686:
674:. Retrieved
670:
660:
648:. Retrieved
643:
639:
626:
614:. Retrieved
609:
605:
511:
499:
491:
459:
452:
442:intertongues
435:
396:
385:through the
362:
360:
246:Type section
2682:Tremadocian
2450:Tournaisian
1640:Mowry Shale
1595:Juana Lopez
1309:D2 Sequence
1032:Pleistocene
411:Raton Basin
393:Description
371:Raton Basin
276: /
264:105°04′30″W
209: /
197:105°04′30″W
184:Coordinates
2996:Categories
2792:Guzhangian
2100:Cisuralian
1131:Aquitanian
830:(2): 69–73
581:References
379:New Mexico
293:R.C. Hills
261:37°31′26″N
230:New Mexico
194:37°31′26″N
2731:Furongian
2550:Famennian
2061:Lopingian
1921:Olenekian
1358:Paleocene
1229:Oligocene
1108:Messinian
612:: 333–336
482:Paleocene
468:from the
466:sediments
407:siltstone
399:sandstone
387:Paleocene
251:Named for
172:siltstone
164:Sandstone
155:Lithology
147:Thickness
127:Underlies
121:Formation
2950:Siderian
2783:Series 3
2740:Stage 10
2322:Gzhelian
2109:Asselian
1238:Chattian
1072:Zanclean
1063:Pliocene
957:Colorado
893:28029760
520:See also
470:San Luis
403:mudstone
375:Colorado
290:Named by
226:Colorado
178:Location
168:mudstone
137:Overlies
2756:Paibian
1876:Anisian
1099:Miocene
884:7392614
863:Bibcode
834:15 July
766:15 July
725:Bibcode
676:15 July
650:15 July
616:14 July
488:Fossils
462:derived
431:erosion
423:weather
415:arkosic
369:in the
236:Country
160:Primary
2912:Tonian
2650:Middle
1937:Induan
1867:Middle
1763:Middle
1292:Eocene
891:
881:
504:area.
222:Region
2673:Lower
2629:Upper
2541:Upper
1912:Lower
1849:Upper
1801:Lower
1730:Upper
1694:Lower
1528:Upper
646:: 258
636:(PDF)
602:(PDF)
365:is a
889:PMID
836:2021
768:2021
678:2021
652:2021
618:2021
464:its
447:coal
427:mica
405:and
377:and
361:The
117:Type
38:PreꞒ
955:of
879:PMC
871:doi
799:hdl
791:doi
787:375
733:doi
721:123
697:doi
373:of
2998::
2885:pЄ
2042:Pz
2031:Ph
1839:Tr
1509:Mz
1498:Ph
1219:Pe
1013:Cz
1002:Ph
910:.
887:.
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869:.
859:51
857:.
853:.
828:14
826:.
822:.
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789:.
758:.
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644:38
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610:41
608:.
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589:^
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389:.
228:,
170:,
166:,
88:Pg
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2903:Z
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2871:e
2864:t
2857:v
2722:Є
2620:O
2532:D
2441:M
2313:⁋
2304:C
2052:P
2016:e
2009:t
2002:v
1721:J
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760:6
739:.
735::
727::
703:.
699::
680:.
654:.
620:.
285:)
93:N
83:K
78:J
73:T
68:P
63:C
58:D
53:S
48:O
43:Ꞓ
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