599:
575:
611:
563:
587:
25:
669:
457:
period tapered off and ceased during this long span of lunar time. The youngest lunar lava flows identified from orbital images are tentatively placed near the end of this period.
449:, which displays characteristics typical of craters of this age, including a surface that is not significantly eroded by subsequent impacts, but which also does not possess a
652:
650:
89:
61:
710:
647:
645:
108:
68:
649:
646:
75:
46:
42:
492:
Other than
Eratosthenes itself, examples of large Eratosthenian craters on the near side of the Moon include
57:
648:
541:
442:
406:
703:
574:
35:
729:
598:
446:
610:
501:
82:
562:
8:
734:
529:
521:
513:
696:
684:
586:
497:
493:
637:, C. M. Fortezzo, P. D. Spudis, S. L. Harrel, 2020. United States Geological Survey.
634:
549:
537:
525:
517:
429:
327:
158:
445:
runs from 3,200 million years ago to 1,100 million years ago. It is named after the
509:
473:
545:
533:
505:
477:
132:
680:
553:
351:
338:
723:
279:
138:
454:
386:
Periods on the Lunar
Geologic Timescale. Axis scale: Millions of years ago.
481:
461:
465:
450:
290:
148:
24:
469:
303:
143:
668:
644:
676:
174:
49:. Unsourced material may be challenged and removed.
721:
704:
460:Its Earth equivalent consists of most of the
711:
697:
453:. The massive basaltic volcanism of the
109:Learn how and when to remove this message
722:
384:
532:. On the far side, examples include
663:
47:adding citations to reliable sources
18:
13:
14:
746:
667:
656:Millions of years before present
635:Unified Geologic Map of the Moon
609:
597:
585:
573:
561:
136:
23:
34:needs additional citations for
628:
1:
621:
683:. You can help Knowledge by
675:This article related to the
7:
487:
385:
274:
10:
751:
662:
425:
420:
412:
402:
397:
172:
167:
128:
123:
443:lunar geologic timescale
416:Lunar Geologic Timescale
250:−1000 —
240:−1500 —
230:−2000 —
220:−2500 —
210:−3000 —
200:−3500 —
190:−4000 —
180:−4500 —
177:
260:−500 —
16:Lunar geologic period
439:Eratosthenian period
43:improve this article
447:crater Eratosthenes
426:Chronological unit
413:Time scale(s) used
692:
691:
657:
435:
434:
398:Usage information
392:
391:
119:
118:
111:
93:
742:
713:
706:
699:
671:
664:
655:
638:
632:
613:
601:
589:
577:
565:
474:Paleoproterozoic
354:
341:
306:
293:
271:
266:
261:
256:
251:
246:
241:
236:
231:
226:
221:
216:
211:
206:
201:
196:
191:
186:
181:
175:
135:
121:
120:
114:
107:
103:
100:
94:
92:
51:
27:
19:
750:
749:
745:
744:
743:
741:
740:
739:
720:
719:
718:
717:
660:
658:
653:
651:
642:
641:
633:
629:
624:
617:
614:
605:
602:
593:
590:
581:
578:
569:
566:
490:
478:Mesoproterozoic
393:
388:
387:
380:
379:
378:
373:
372:
371:
366:
365:
364:
359:
358:
357:
352:
346:
345:
344:
339:
333:
332:
331:
322:
321:
320:
311:
310:
309:
304:
298:
297:
296:
291:
285:
284:
283:
272:
269:
267:
264:
262:
259:
257:
254:
252:
249:
247:
244:
242:
239:
237:
234:
232:
229:
227:
224:
222:
219:
217:
214:
212:
209:
207:
204:
202:
199:
197:
194:
192:
189:
187:
184:
182:
179:
163:
162:
161:
156:
151:
146:
141:
130:
115:
104:
98:
95:
58:"Eratosthenian"
52:
50:
40:
28:
17:
12:
11:
5:
748:
738:
737:
732:
716:
715:
708:
701:
693:
690:
689:
672:
654:
643:
640:
639:
626:
625:
623:
620:
619:
618:
615:
608:
606:
603:
596:
594:
591:
584:
582:
579:
572:
570:
567:
560:
489:
486:
433:
432:
427:
423:
422:
418:
417:
414:
410:
409:
404:
403:Celestial body
400:
399:
395:
394:
390:
389:
382:
381:
376:
375:
374:
369:
368:
367:
362:
361:
360:
349:
348:
347:
336:
335:
334:
325:
324:
323:
314:
313:
312:
301:
300:
299:
288:
287:
286:
277:
276:
275:
273:
270:0 —
268:
263:
258:
253:
248:
243:
238:
233:
228:
223:
218:
213:
208:
203:
198:
193:
188:
183:
178:
173:
170:
169:
165:
164:
157:
152:
147:
142:
137:
131:3200 – 1100
129:
126:
125:
117:
116:
31:
29:
22:
15:
9:
6:
4:
3:
2:
747:
736:
733:
731:
730:Eratosthenian
728:
727:
725:
714:
709:
707:
702:
700:
695:
694:
688:
686:
682:
678:
673:
670:
666:
665:
661:
636:
631:
627:
612:
607:
600:
595:
588:
583:
576:
571:
564:
559:
558:
557:
555:
551:
547:
543:
539:
535:
531:
527:
523:
519:
515:
511:
507:
503:
499:
495:
485:
483:
479:
475:
471:
467:
463:
458:
456:
452:
448:
444:
440:
431:
428:
424:
419:
415:
411:
408:
405:
401:
396:
383:
356:
355:
343:
342:
330:
329:
319:
318:
317:Eratosthenian
308:
307:
295:
294:
282:
281:
280:Pre-Nectarian
176:
171:
166:
160:
155:
150:
145:
140:
134:
127:
124:Eratosthenian
122:
113:
110:
102:
99:December 2009
91:
88:
84:
81:
77:
74:
70:
67:
63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
685:expanding it
674:
659:
630:
568:Eratosthenes
491:
459:
438:
436:
407:Earth's Moon
350:
337:
326:
316:
315:
302:
289:
278:
153:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
502:Aristoteles
482:Proterozoic
462:Mesoarchean
735:Moon stubs
724:Categories
622:References
530:Cavalerius
522:Bullialdus
514:Pythagoras
466:Neoarchean
451:ray system
421:Definition
328:Copernican
168:Chronology
69:newspapers
580:Macrobius
542:Birkeland
498:Macrobius
494:Langrenus
292:Nectarian
616:Kirkwood
550:Kirkwood
538:Hamilton
526:Plutarch
518:Scoresby
488:Examples
510:Moretus
470:Archean
455:Imbrian
441:in the
305:Imbrian
265:–
255:–
245:–
235:–
225:–
215:–
205:–
195:–
185:–
83:scholar
604:Olcott
592:Hausen
552:, and
546:Finsen
534:Olcott
528:, and
506:Hausen
484:eon).
480:eras (
472:eon),
468:eras (
430:Period
377:
370:
363:
85:
78:
71:
64:
56:
679:is a
554:Ricco
353:Early
90:JSTOR
76:books
681:stub
677:Moon
476:and
464:and
437:The
340:Late
139:PreN
62:news
45:by
726::
556:.
548:,
544:,
540:,
536:,
524:,
520:,
516:,
512:,
508:,
504:,
500:,
496:,
133:Ma
712:e
705:t
698:v
687:.
159:C
154:E
149:N
144:I
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.