Microplankton from the Cape Lamb Member, López de Bertodano Formation (Upper Cretaceous), Cape Lamb, Vega Island

Smith, Samantha

doi:10.1017/s095410209200049x

Cited by 30 publications

(18 citation statements)

References 24 publications

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“…Amajor problem in the current understanding of thepalynostratigraphy of the basin fill is exemplified by the papers by Dolding and Wood & Askin. The typical palynomorph assemblages from the top of the Herbert Sound Member and the Cape Lamb Member have been interpreted as late Campanian-early Maastrichtian (Pirrie & Riding 1988, Pirrie et al 1991a, Crame et al 1991, Smith 1992, late Campanian (Dolding 1992) or mid-late Campanian (Askin et al 1991, Wood & Askin 1992. The age of this assemblage is critical to our understanding of the correlation of the sequences on Vega Island with that on Seymour Island.…”

Section: Discussionmentioning

confidence: 99%

Jurassic–Tertiary stratigraphy and palynology of the James Ross Basin: review and introduction

1992

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A sedimentary sequence, c. 5–6 km thick, extending from the Kimmeridgian–Upper Eocene crops out in the James Ross Island area, northern Antarctic Peninsula. This succession is the most important onshore Late Cretaceous–Tertiary sequence in Antarctica and is probably one of the most significant Cretaceous sequences in the Southern Hemisphere. However, the understanding of the geological and palaeontological evolution of the area has been limited by an incomplete knowledge of the biostratigraphy of this region. Palynological studies are providing a finer resolution biostratigraphical zonation scheme than previously possible. This paper reviews the stratigraphy of the basin fill succession and provides a framework for the papers published in this Special Issue.

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Section: Discussionmentioning

confidence: 99%

Jurassic–Tertiary stratigraphy and palynology of the James Ross Basin: review and introduction

1992

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“…Isabelidinium korojonense, I. pellucidum, Satyrodinium bengalense and Xenikoon australis) are also consistently present, and were probably derived from reworking of the upper part of the Rabot Member and Hamilton Point Member of the Santa Marta Formation (see Pirrie et al 1997). Forms such as Palaeocystodinium granulatum and Phelodinium exilicornutum suggest that reworking of late Campanian/early Maastrichtian strata from the Snow Hill Island Formation may also have occurred (Smith, 1992). In addition the Eocene species Deflandrea antarctica was recovered from Punta Redonda.…”

Section: B Palynologymentioning

confidence: 99%

Miocene glaciomarine sedimentation in the northern Antarctic Peninsula region: the stratigraphy and sedimentology of the Hobbs Glacier Formation, James Ross Island

et al. 1997

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The onshore record of Cenozoic glaciation in the Antarctic Peninsula region is limited to a number of isolated localities on Alexander Island, the South Shetland Islands and in the James Ross Island area. In the James Ross Island area, Late Cretaceous sedimentary rocks are unconformably overlain by a unit of diamictites and tuffs, which occur at the base of the James Ross Island Volcanic Group. These rocks are here defined as the Hobbs Glacier Formation, and on the basis of palynological studies are assigned to a Miocene (?late Miocene) age. The diamictites are interpreted as representing glaciomarine sedimentation close to the grounding line of either a floating ice shelf or a grounded tidewater glacier in a marine basin. Provenance studies indicate that the glacier was flowing from the Antarctic Peninsula towards the southeast. Volcanic tuffs conformably overlie the diamictites and are interpreted as representing deposition in a periglacial delta front setting in either a marine or non-marine basin, away from direct glacial influence. The Hobbs Glacier Formation and overlying James Ross Island Volcanic Group help to enhance our understanding of the Neogene glacial chronology of West Antarctica.

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“…The relatively low numbers of taxa endemic to the Antarctic area during this interval suggests a continuity with the preceding Aptian-Turonian floras (Keating et al 1992) which are similarly comparable with their Austral counterparts. Later Cretaceous (late Campanian-Maastrichtian) and Tertiary floras (see Askin 1988, Wrenn & Hart 1988, Smith 1992, by contrast appear to include a greater number of endemic forms and may indicate an isolation of the Antarctic Peninsula from Austral influences during the latest Cretaceous and Tertiary.…”

Section: Provincialismmentioning

confidence: 99%

Palynology of the Lachman Crags Member, Santa Marta Formation (Upper Cretaceous) of north-west James Ross Island

Keating

1992

Antartic science

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Palynomorph assemblages from the Lachman Crags Member of the Santa Marta Formation, north-west James Ross Island, Antarctic Peninsula are described. By basis of comparison with other Southern Hemisphere localities, particularly southern Australia, an early Santonian–early Campanian age is indicated. The results broadly corroborate previous stratigraphical interpretations based on macrofaunal evidence, although the presence of a significant thickness of Santonian strata, not previously recognized, is suggested. The dinoflagellate cyst floras allow the recognition of the local equivalents of the Australian Odontochitina porifera, Isabelidinium cretaceum, Nelsoniella aceras and Xenikoon australis Interval Zones. Some recycling of mid Cretaceous (and possibly Late Jurassic) taxa is also indicated. The miospore flora is composed of relatively long-ranging species, although the local appearance of certain taxa may be of stratigraphical significance. Ranges recorded support previous interpretations of heterochroneity in Southern Hemisphere floras. The palynoflora comprises 76 dinoflagellate cyst, 40 miospore and 7 acritarch, prasinophyte and chlorophyte taxa. Six undescribed species of dinoflagellate cyst are recorded and placed in open nomenclature.

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Microplankton from the Cape Lamb Member, López de Bertodano Formation (Upper Cretaceous), Cape Lamb, Vega Island

Cited by 30 publications

References 24 publications

Jurassic–Tertiary stratigraphy and palynology of the James Ross Basin: review and introduction

Jurassic–Tertiary stratigraphy and palynology of the James Ross Basin: review and introduction

Miocene glaciomarine sedimentation in the northern Antarctic Peninsula region: the stratigraphy and sedimentology of the Hobbs Glacier Formation, James Ross Island

Palynology of the Lachman Crags Member, Santa Marta Formation (Upper Cretaceous) of north-west James Ross Island

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