STRATIGRAPHY AND PALEONTOLOGY OF CAMPANIAN AND EOCENE SEDIMENTS, COCKBURN ISLAND, ANTARCTIC PENINSULA

被引：43

作者：

ASKIN, RA

ELLIOT, DH

STILWELL, JD

ZINSMEISTER, WJ

机构：

[1] Department of Earth Sciences, University of California, Riverside

[2] Byrd Polar Research Center, The Ohio State University, Columbus

[3] Department of Geology, University of Otago, Dunedin

[4] Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette

来源：

JOURNAL OF SOUTH AMERICAN EARTH SCIENCES | 1991年 / 4卷 / 1-2期

关键词：

D O I：

10.1016/0895-9811(91)90021-C

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Approximately 150 meters of fine-grained Campanian sediments and over 100 meters of fine-to medium-grained Eocene sands underlie Pliocene basalts and conglomerates on Cockburn Island, north-eastern Antarctic Peninsula. The Campanian beds are part of the "Unnamed strata" of the Marambio Group and contain invertebrate and palynomorph fossils that predate the adjacent Seymour Island Lopez de Bertodano succession. Rich palynomorph floras suggest a middle Campanian age. Deposition was in low energy, shallow shelf environments. Invertebrate and palynomorph fossils, and lithology, all indicate correlation of the Eocene beds with the basal La Meseta Formation, members Telm 1 and lower Telm 2 of Seymour Island. The age of these beds is probably late early Eocene. The basal La Meseta sands are marginal marine to shallow shelf sediments that fill a broad valley probably incised during latest Paleocene-earliest Eocene as a result of tectonism and sea-level lowstands.

引用

页码：99 / 117

页数：19

共 68 条

[1]

Adie, Geological investigations in the Falkland Islands Dependencies since 1940, Polar Record, 9, 58, pp. 3-16, (1958)

[2]

Askin, Campanian palynomorphs from James Ross and Vega Islands, Antarctic Peninsula, Antartic Journal of the United States, 18, pp. 63-65, (1983)

[3]

Askin, Campanian to Paleocene palynological succession of Seymour and adjacent islands, northeastern Antartic Peninsula, Geology and Paleontology of Seymoyr Island, Antarctic Peninsula, 169, pp. 131-153, (1988)

[4]

Askin, Endemism and heterochroneity in the Late Cretaceous (Campanian) to Paleocene palynofloras of Seymour Island, Antartica: Implications for origins, dispersal and palaeo-climates of southern floras, Origins and Evolution of the Antarctic Biota, 47, pp. 107-119, (1989)

[5]

Askin, Cryptogam spores from the upper Campanian and Maastrichtian of Seymour Island, Antarctica, Micropaleontology, 36, 2, pp. 141-156, (1990)

[6]

Bibby, The stratigraphy of part north-east Graham Land and the James Ross Island Group, British Antarctic Survey, Scientific Reports, 53, pp. 1-37, (1966)

[7]

Birkenmajer, Zastawniak, Late Cretaceous-early Tertiary floras of King George Island, West Antarctica: Their stratigraphic distribution and palaeoclimatic significance, Origins and Evolution of the Antarctic Biota, 47, pp. 227-240, (1989)

[8]

Birkenmajer, Delitala, Narebski, Nicoletti, Petrucciani, Geochronology of Tertiary island-arc volcanics and glacigene deposits, King George Island, South Shetland Islands (West Antarctica), Bulletin of the Polish Academy of Sciences, East Sciences, 34, pp. 139-155, (1986)

[9]

Buckman, Antarctic fossil brachiopoda collected by the Swedish south polar expedition, Wissenschaftliche Ergebnisse der Schwedischen Sudpolar Expedition 1901–1903, 3, 7, pp. 1-40, (1910)

[10]

Cranwell, Palynological intimations of some pre-Oligocene Antarctic climates, Palaeoecology of Africa, pp. 1-19, (1969)

← 1 2 3 4 5 6 7 →