Reworked late Neogene <i>Austrochlamys anderssoni</i> (Mollusca: Bivalvia) from northern James Ross Island, Antarctica

Pirrie, Duncan; Jonkers, H.A.; Smellie, J.L.; Crame, J. Alistair; McArthur, J. M.

doi:10.1017/s0954102010000842

Cited by 10 publications

(7 citation statements)

References 27 publications

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“…4.9 Ma for the CIF (Jonkers and Kelley 1998). Ages determined using mean Sr isotope ratios from Dingle et al (1997); based on Howarth and McArthur (1997) and Sr isotope ratios from bivalve shells ) suggest a depositional age of 4.7 (+0.6/ −1.2) and 4.66 (+0.17/−0.24) Ma respectively (Pirrie et al 2011). These ages are stratigraphically consistent with the 40 Ar/ 39 Ar age of the underlying volcanic rocks.…”

Section: Cockburn Island Antarctic Peninsulasupporting

confidence: 58%

“…Correlated using data from (Gradstein et al 2012) and benthic 18 O isotope stack LR04 (Lisiecki and Raymo 2005). Data for the Antarctic Peninsula is from Smellie et al (2006);N vlt et al (2011), Cockburn Island: (Jonkers and Kelley 1998;Pirrie et al 2011;Levy et al 2012), Vestfold Hills: (Quilty et al 1990;Quilty et al 2000;Whitehead et al 2001;Whitehead et al 2004;Whitehead et al 2006b;Cody et al 2008;Colhoun et al 2010), Larsemann Hills: (Webb 1974;Quilty et al 1990;McMinn and Harwood 1995)…”

Section: Discussionmentioning

confidence: 99%

“…These ages are stratigraphically consistent with the 40 Ar/ 39 Ar age of the underlying volcanic rocks. In contrast a biostratigraphic age based on the diatom assemblage suggested that the deposit was formed around 3 Ma (Jonkers and Kelley 1998;Pirrie et al 2011) but an updated biostratigraphy places this at 2.8 to 2.4 Ma (Cody et al 2008;Levy et al 2012). Ages based on diatom biostratigraphy can be problematic as aeolian transportation of diatoms by wind may have occurred (e.g.…”

Section: Cockburn Island Antarctic Peninsulamentioning

confidence: 99%

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Fossil proxies of near-shore sea surface temperatures and seasonality from the late Neogene Antarctic shelf

Clark

Williams

Hill

et al. 2013

Naturwissenschaften

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Section: Cockburn Island Antarctic Peninsulasupporting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Section: Cockburn Island Antarctic Peninsulamentioning

confidence: 99%

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Fossil proxies of near-shore sea surface temperatures and seasonality from the late Neogene Antarctic shelf

Clark

Williams

Hill

et al. 2013

Naturwissenschaften

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“…They were originally described as the Hobbs Glacier Formation by Pirrie et al (1997). However, further formations of clastic sed− iments below and within the JRIVG have subsequently been defined in this area (Jonkers 1998;Lirio et al 2003;Smellie et al 2006;Nývlt et al 2011;Pirrie et al 2011). The sequences are typically just a few metres thick, some of them could reach up to >100 m Nelson et al 2009;Nývlt et al 2011).…”

Section: Geological Settingmentioning

confidence: 97%

“Bottomsets” of the lava−fed delta of James Ross Island Volcanic Group, Ulu Peninsula, James Ross Island, Antarctica

Nehyba¹,

Nývlt²

2015

Polish Polar Research

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Sedimentological study of the three geographically separated outcrops of bottom− sets of a single lava−fed delta (Pliocene) in the James Ross Island (Antarctica) allows recogni− tion of six lithofacies. Deposits of traction currents, deposits of volcaniclastic debris flows and products of such flows transformations (both low− and high−density turbidity currents) and glacigenic deposits (subaqueous debris flows and traction/turbidity currents) were all recog− nised. Existence of submarine proglacial environment formed prior to formation of volcani− clastic deposits partly covering the subaqueous slopes of volcano is supposed. The principal role of mass flow processes was recognised and explained by relative steep slopes of the lava−fed delta. The distribution of lithofacies significantly differs in the individual outcrops. These variations in sedimentary succession and also in thickness of volcaniclastic deposits of "bottomsets" of the single lava fed delta suggest principal role of local conditions and paleogeography for development and preservation of this part of delta depositional system. Moreover proximal and distal setting can be followed and direct vs. more distant relation to over−riding lava−fed delta supposed. The sedimentary succession terminated by foresets of hyaloclastite breccia.

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“…1). In most of the area stud ied they are over lain by Ce no zoic lavas and hyaloclaste brec cias (James Ross Is land Vol ca nic Group), and also by the Ce no zoic Men del, Hobbs Gla cier and Cockburn Is land for ma tions (Nývlt et al, 2011;Pirrie et al, 2011) and Qua ter nary de pos its.…”

Section: Geological Settingmentioning

confidence: 99%

Calcareous nannofossils from the Upper Cretaceous of northern James Ross Island, Antarctica: a pilot study

Švabenická

Vodrážka

Nývlt

2012

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The Czech sci en tific ex pe di tion to north ern James Ross Is land, Antarctica has tested the use of cal car e ous nannofossils as a pos si ble tool for strati graphic cor re la tion of Cre ta ceous and Neo gene strata. Only a few sam ples with poor nannofossil con tent gave use ful in for mation for biostratigraphy. The Lower Campanian Chiastozygus garrisonii Zone and Gephyrobiscutum diabolum Subzone, re spec tively, was es tab lished in the lower part of the Santa Marta For ma tion, Lachman Crags Mem ber, from the com mon oc cur rence of Gephyrobiscutum diabolum as so ci ated with Broinsonia parca parca and Acuturris scotus. De pos its of the Late Mio cene Men del For mation yielded ex clu sively re worked nannofossils from the older Up per Cre ta ceous de pos its. Nannofossils in di cate at least two dis tinct strati graphic lev els: Mid dle Coniacian and Santonian-basal Campanian, and these must have been sourced from the im me di ate area. The ma jor ity of the ma rine de posit sam ples stud ied were bar ren of nannofossils, prob a bly due to late diagenetic sec ond ary decalcification. Lilian Švábenická and Radek

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Reworked late Neogene Austrochlamys anderssoni (Mollusca: Bivalvia) from northern James Ross Island, Antarctica

Abstract: Abstract:We report on the discovery of a new outcrop of fossiliferous

Cited by 10 publications

References 27 publications

Fossil proxies of near-shore sea surface temperatures and seasonality from the late Neogene Antarctic shelf

Fossil proxies of near-shore sea surface temperatures and seasonality from the late Neogene Antarctic shelf

“Bottomsets” of the lava−fed delta of James Ross Island Volcanic Group, Ulu Peninsula, James Ross Island, Antarctica

Calcareous nannofossils from the Upper Cretaceous of northern James Ross Island, Antarctica: a pilot study

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