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Roberto, Alessio Di; Carlo, Paola Del; Rocchi, Sergio; Panter, K. S.

doi:10.1130/ges00754.1

Cited by 12 publications

(3 citation statements)

References 46 publications

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“…When distinctive and sufficiently widespread, they represent valuable stratigraphic tools for geological correlation and dating (Lowe 2011 and references therein). In polar regions, tephra layers have been widely used as a chronostratigraphic tool (Smellie 1999;Wilch et al 1999;Dunbar et al 2003;Narcisi et al 2006;Dunbar and Kurbatov 2011;Di Roberto et al 2012) to obtain independent age constraints for glaciological modelling (Narcisi et al 2006;Curzio et al 2008) and to synchronize palaeoclimatic proxies from widely spaced records (Davies et al 2010;Narcisi et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Late Pleistocene-Holocene volcanic activity in northern Victoria Land recorded in Ross Sea (Antarctica) marine sediments

et al. 2015

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Eight pyroclastic fall deposits have been identified in cores of Late Pleistocene-Holocene marine sediments from the Ross Sea (Antarctica), and their components, granulometry and clast morphologies were analysed. Sedimentological, petrographic and geochemical analysis of clasts, with 40Ar-39Ar dating of alkali feldspar grains, indicate that during this period at least five explosive eruptions of mid to high intensity (plinian to subplinian) occurred, and that three of these eruptions took place from Mount Melbourne volcanic complex, between 137.1 ± 3.4 and 12 ka. Geochemical comparison of the studied tephra with micro and crypto-tephra recovered from deep Antarctic ice cores and from nearby englacial tephra at Frontier Mountain indicates that eruptive activity in the Melbourne Volcanic Province of northern Victoria Land was intense during the Late Pleistocene-Holocene, but only a general area of provenance for the majority of the identified tephra can be identified

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Section: Introductionmentioning

confidence: 99%

Late Pleistocene-Holocene volcanic activity in northern Victoria Land recorded in Ross Sea (Antarctica) marine sediments

et al. 2015

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“…The main rifting phase was during the early Oligocene to early Miocene . The paleogeography of the Ross Sea region during the early Miocene is not well constrained, although improved understanding has come from recognition that Mount Morning appears to have been an active volcano during much of this time Di Roberto et al, 2012;Nyland et al, 2013) and that the sedimentary record contains a decipherable history of the interaction of local Transantarctic Mountains (TAM) glaciers and those farther to the south . Talarico and Sandroni (2011) distinguished three main source areas of extra formational clasts feeding into the study area and interpreted the lithologic provenance signals from them:…”

Section: Paleogeographic Contextmentioning

confidence: 99%

“…The only known source of early Miocene volcanics in the area is Mount Morning, ~100 km to the south of the drill site (Martin et al, 2010;Di Roberto et al, 2012;Nyland et al, 2013), so the glass signal in AND-2A is likely related to ice volume variations in southern East Antarctica. On this basis, sediments with more volcanic glass should be underlain by sediments with evidence for ice-sheet grounding, and be associated with (or perhaps overlie) diamictites with a southern provenance (particularly SM).…”

Section: Paleogeographic Contextmentioning

confidence: 99%

A sedimentological record of early Miocene ice advance and retreat, AND-2A drill hole, McMurdo Sound, Antarctica

et al. 2018

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Early Miocene Antarctic glacial history: new insights from heavy mineral analysis from ANDRILL AND-2A drill core sediments

Iacoviello

Giorgetti

Memmi

et al. 2014

Int J Earth Sci (Geol Rundsch)

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The present study deals with heavy mineral analysis of late Early Miocene marine sediments recovered in the McMurdo Sound region (Ross Sea, Antarctica) during the ANDRILL-SMS Project in 2007. The main objective is to investigate how heavy mineral assemblages reflect different source rocks and hence different provenance areas. These data contribute to a better understanding of East Antarctica ice dynamics in the Ross Sea sector during the Early Miocene (17.6-20.2 Ma), a time of long-term global warming and sea level rise. The AND-2A drill core recovered several stratigraphic intervals that span from Early Miocene to Pleistocene and it collected a variety of terrigenous lithologies. The heavy mineral assemblages of the lower 650-m-thick sedimentary succession were analyzed through SEM observations and SEM-EDS microanalyses on heavy mineral grains. The heavy mineral analysis shows that the sediments are a mix of detritus dominated by McMurdo Volcanic Group sources most likely located in the present-day Mount Morning area (Proto-Mount Morning) with minor contribution from Transantarctic Mountains source rocks located west of the drill site. The heavy mineral assemblages in Interval 1 indicate that between 20.2 and 20.1 Ma, the grounding line of the ice sheet advanced to a position near the present-day Mount Morning volcanic center. During deposition of Interval 2 (20.1-19.3 Ma), the ice sheet most likely experienced a dynamic behavior with interval of ice advance alternating with periods of ice retreat, while Interval 3 (19.3-18.7 Ma) records further retreat to open water conditions. A dynamic behavior is noted in Interval 4 (18.7-17.6 Ma) with a decreasing contribution of materials derived from the basalts of the Mount Morning volcanic center located to the south of the drill site and a consequent increasing contribution of materials derived from the Transantarctic Mountains to the west of the drill site.

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Cited by 12 publications

References 46 publications

Late Pleistocene-Holocene volcanic activity in northern Victoria Land recorded in Ross Sea (Antarctica) marine sediments

Late Pleistocene-Holocene volcanic activity in northern Victoria Land recorded in Ross Sea (Antarctica) marine sediments

A sedimentological record of early Miocene ice advance and retreat, AND-2A drill hole, McMurdo Sound, Antarctica

Early Miocene Antarctic glacial history: new insights from heavy mineral analysis from ANDRILL AND-2A drill core sediments

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