41:
34:
460:
232:
224:
488:
448:. A large mountain, 2,555 metres (8,383 ft) high, with a broad icecapped summit, standing south of the Lashly Mountains, on the south side of the main stream of the Skelton Glacier where it leaves the polar plateau. Discovered by the New Zealand party of the CTAE (1956-58) who named it because of its association with The Portal. Portal Mountain is the southernmost area of the Feather and Lashly geological formation.
472:
798:
691:
266:. It is a sandstone and siltstone sequence containing plant remains that overlies the Feather conglomerate. It appears to conform with the underlying conglomerate in areas, with local areas of disconformity. The Aztec Siltstone appears to have been deposited on a flat alluvial plain that held streams, swamps, lakes and low emergent areas.
283:, silica plant microfossils, have been found in four samples collected from the east side of a ridge that extends southeast from Mount Crean. The phytoliths in the two Aztec Siltstone samples were probably from
802:
695:
723:
Barrett, P. J.; Kohn, B. P.; Askin, R. A.; McPherson, J. G. (1971), "Preliminary report on Beacon
Supergroup studies between the Hatherton and Mackay Glaciers, Antarctica",
77:
487:
126:
344:. Massive, rocky mountain, 2,550 metres (8,370 ft) high, forming the central and highest summit of the Lashly Mountains. Named by the
345:
821:
357:
33:
699:
407:
353:
184:
459:
420:
370:
316:
806:
471:
70:
211:. Mount Crean is the highest peak of the range. Portal Mountain lies to the south of the range, above the
295:
have been found together with fish remains in lake beds at Portal
Mountain and in the Lashly Mountains.
709:
The Lashly
Mountains Of Southern Victorialand, Antarctica: Investigating A Possible Ancient Volcano
259:
252:
208:
707:
200:
763:
199:
The
Lashley Mountains are on the edge of the East Antarctic Ice Sheet. They are west of the
349:
163:) are a small group of mountains, the most prominent at 2,550 metres (8,370 ft) being
779:
743:
Carter, John A. (1999), "Late
Devonian, Permian and Triassic Phytoliths from Antarctica",
8:
244:
406:
on the east, flowing south into The Portal. So named by the New
Zealand Party of the
255:. Samples from an unnamed nunatak north of Mount Crean indicated an extrusive origin.
263:
212:
493:
Eastern side of Portal
Mountain, looking south towards the Angino Buttress; midnight
231:
752:
736:
732:
673:
399:
223:
291:
248:
240:
188:
168:
207:, from which they are separated by the Lashly Glacier, which flows south into
815:
435:
422:
403:
385:
372:
331:
318:
285:
204:
172:
142:
128:
93:
79:
398:. Short, broad glacier lying between the Lashly Mountains on the west and
603:
601:
309:
164:
649:
598:
586:
271:
63:
275:
flora in much of the
Lashley formation, dating from the early to late
712:, vol. 47, Geological Society of America Abstracts with Programs
280:
756:
276:
545:
410:(CTAE) (1956-58) for its proximity to the Lashly Mountains.
557:
533:
722:
655:
607:
592:
511:
509:
507:
637:
625:
576:
574:
572:
681:(2 ed.), United States Board on Geographic Names
504:
613:
569:
521:
191:, a member of the party which explored this area.
762:
551:
813:
778:
539:
352:, Royal Navy, companion of Lashly with Scott's
705:
563:
227:Lashly Mountains in southwest of mapped region
725:New Zealand Journal of Geology and Geophysics
258:The Lashly Formation is the youngest in the
183:The Lashly Mountains were discovered by the
346:New Zealand Antarctic Place-Names Committee
235:Region to the south of the Lashly Mountains
706:Ashauer, Zachary M; Currier, Ryan (2015),
178:
230:
222:
40:
784:, USGS: United States Geological Survey
768:, USGS: United States Geological Survey
700:United States Board on Geographic Names
671:
643:
631:
515:
408:Commonwealth Trans-Antarctic Expedition
814:
742:
619:
580:
527:
358:British Antarctic Expedition, 1910–13
354:British National Antarctic Expedition
239:The Lashly Mountains lie between the
185:British National Antarctic Expedition
13:
805:from websites or documents of the
698:from websites or documents of the
413:
14:
833:
675:Geographic Names of the Antarctic
363:
822:Mountain ranges of Victoria Land
801: This article incorporates
796:
694: This article incorporates
689:
486:
470:
458:
167:, standing south of the head of
39:
32:
807:United States Geological Survey
171:and west of Lashly Glacier, in
737:10.1080/00288306.1971.10421951
672:Alberts, Fred G., ed. (1995),
303:
1:
498:
465:William Lashly, November 1911
16:Mountain range in Antarctica
7:
477:Tom Crean taken aboard the
348:(NZ-APC) for Petty Officer
298:
269:There are plant fossils of
194:
10:
838:
664:
564:Ashauer & Currier 2015
451:
307:
218:
69:
59:
54:
26:
21:
356:(BrNAE) of 1901-04, and
253:Transantarctic Mountains
187:(1901–04) and named for
803:public domain material
696:public domain material
236:
228:
179:Exploration and naming
552:Mount Harmsworth USGS
234:
226:
201:Quartermain Mountains
656:Barrett et al. 1971
608:Barrett et al. 1971
593:Barrett et al. 1971
540:Taylor Glacier USGS
432: /
382: /
328: /
245:McMurdo Dry Valleys
138: /
89: /
436:78.100°S 159.167°E
386:77.950°S 159.833°E
332:77.883°S 159.500°E
237:
229:
143:77.900°S 159.550°E
94:77.900°S 159.550°E
745:Micropaleontology
264:Beacon Supergroup
117:
116:
71:Range coordinates
829:
800:
799:
791:
790:
789:
775:
774:
773:
765:Mount Harmsworth
759:
739:
719:
718:
717:
693:
692:
688:
687:
686:
680:
659:
653:
647:
641:
635:
629:
623:
617:
611:
605:
596:
590:
584:
578:
567:
561:
555:
549:
543:
537:
531:
525:
519:
513:
490:
474:
462:
447:
446:
444:
443:
442:
441:-78.100; 159.167
437:
433:
430:
429:
428:
425:
400:Tabular Mountain
397:
396:
394:
393:
392:
391:-77.950; 159.833
387:
383:
380:
379:
378:
375:
343:
342:
340:
339:
338:
337:-77.883; 159.500
333:
329:
326:
325:
324:
321:
162:
161:
159:
158:
157:
155:
154:Lashly Mountains
150:
149:
148:-77.900; 159.550
144:
139:
136:
135:
134:
131:
121:Lashly Mountains
113:
112:
110:
109:
108:
106:
105:Lashly Mountains
101:
100:
99:-77.900; 159.550
95:
90:
87:
86:
85:
82:
43:
42:
36:
22:Lashly Mountains
19:
18:
837:
836:
832:
831:
830:
828:
827:
826:
812:
811:
797:
794:
787:
785:
771:
769:
757:10.2307/1486202
715:
713:
690:
684:
682:
678:
667:
662:
654:
650:
642:
638:
630:
626:
618:
614:
606:
599:
591:
587:
579:
570:
562:
558:
550:
546:
538:
534:
526:
522:
514:
505:
501:
494:
491:
482:
475:
466:
463:
454:
440:
438:
434:
431:
426:
423:
421:
419:
418:
416:
414:Portal Mountain
390:
388:
384:
381:
376:
373:
371:
369:
368:
366:
336:
334:
330:
327:
322:
319:
317:
315:
314:
312:
306:
301:
249:extrusive rocks
241:intrusive rocks
221:
197:
181:
153:
151:
147:
145:
141:
140:
137:
132:
129:
127:
125:
124:
104:
102:
98:
96:
92:
91:
88:
83:
80:
78:
76:
75:
50:
49:
48:
47:
46:
45:
44:
17:
12:
11:
5:
835:
825:
824:
793:
792:
781:Taylor Glacier
776:
760:
740:
731:(3): 605–614,
720:
703:
668:
666:
663:
661:
660:
658:, p. 612.
648:
646:, p. 584.
636:
634:, p. 161.
624:
612:
610:, p. 610.
597:
595:, p. 613.
585:
568:
556:
544:
532:
520:
518:, p. 420.
502:
500:
497:
496:
495:
492:
485:
483:
476:
469:
467:
464:
457:
453:
450:
415:
412:
365:
364:Lashly Glacier
362:
308:Main article:
305:
302:
300:
297:
292:Conchostracans
260:Victoria Group
220:
217:
196:
193:
189:William Lashly
180:
177:
175:, Antarctica.
169:Taylor Glacier
115:
114:
73:
67:
66:
61:
57:
56:
52:
51:
38:
37:
31:
30:
29:
28:
27:
24:
23:
15:
9:
6:
4:
3:
2:
834:
823:
820:
819:
817:
810:
808:
804:
783:
782:
777:
767:
766:
761:
758:
754:
750:
746:
741:
738:
734:
730:
726:
721:
711:
710:
704:
701:
697:
677:
676:
670:
669:
657:
652:
645:
640:
633:
628:
622:, p. 56.
621:
616:
609:
604:
602:
594:
589:
583:, p. 59.
582:
577:
575:
573:
566:, p. 13.
565:
560:
553:
548:
541:
536:
530:, p. 57.
529:
524:
517:
512:
510:
508:
503:
489:
484:
480:
473:
468:
461:
456:
455:
449:
445:
411:
409:
405:
404:Mount Feather
401:
395:
361:
359:
355:
351:
347:
341:
311:
296:
294:
293:
288:
287:
286:Archaeopteris
282:
278:
274:
273:
267:
265:
261:
256:
254:
250:
246:
242:
233:
225:
216:
214:
210:
206:
205:Mount Feather
202:
192:
190:
186:
176:
174:
173:Victoria Land
170:
166:
160:
122:
111:
74:
72:
68:
65:
62:
58:
53:
35:
25:
20:
795:
786:, retrieved
780:
770:, retrieved
764:
751:(1): 56–61,
748:
744:
728:
724:
714:, retrieved
708:
683:, retrieved
674:
651:
644:Alberts 1995
639:
632:Alberts 1995
627:
615:
588:
559:
547:
535:
523:
516:Alberts 1995
478:
417:
367:
350:Thomas Crean
313:
290:
284:
270:
268:
257:
238:
213:Skelton Névé
198:
182:
120:
118:
620:Carter 1999
581:Carter 1999
528:Carter 1999
439: /
389: /
335: /
310:Mount Crean
304:Mount Crean
165:Mount Crean
146: /
97: /
788:2024-02-11
772:2024-02-11
716:2024-02-12
685:2024-01-30
499:References
281:Phytoliths
272:Dicroidium
209:The Portal
152: (
103: (
64:Antarctica
479:Endurance
60:Continent
55:Geography
816:Category
427:159°10′E
377:159°50′E
323:159°30′E
299:Features
277:Triassic
247:and the
195:Location
133:159°33′E
84:159°33′E
665:Sources
452:Gallery
424:78°06′S
374:77°57′S
320:77°53′S
262:of the
251:of the
243:of the
219:Geology
130:77°54′S
81:77°54′S
481:, 1914
679:(PDF)
402:and
203:and
119:The
753:doi
733:doi
818::
809:.
749:45
747:,
729:14
727:,
600:^
571:^
506:^
360:.
289:.
279:.
215:.
755::
735::
702:.
554:.
542:.
156:)
123:(
107:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
