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Marambio Group

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Journal Article
Published: 01 July 1994
Journal of Sedimentary Research (1994) 64 (3a): 541–552.
...Duncan Pirrie; Peter W. Ditchfield; Jim D. Marshall Abstract Upper Cretaceous shallow-marine sediments from Vega Island, Antarctica, contain five major authigenic phases; glauconite, pyrite, a zeolite mineral of the clinoptilolite-heulandite group, chlorite, and calcite. The framework sediment...
Image
Section of the Upper Cretaceous <b>Marambio</b> <b>Group</b> in southeastern James Ross B...
Published: 01 May 2013
Figure 2 Section of the Upper Cretaceous Marambio Group in southeastern James Ross Basin, showing the distribution of Euflabella ichnospecies, ichnofossil associations, and sedimentary facies. See Figure 1 for location and Figure 3 key for ichnofossils.
Image
Lithostratigraphic relationships within the <b>Marambio</b> <b>Group</b>, James Ross Basi...
Published: 01 January 2003
TEXT-FIGURE 2 Lithostratigraphic relationships within the Marambio Group, James Ross Basin. The units are not to scale (modified from Pirrie et al. 1997 ).
Journal Article
Published: 01 December 1982
Journal of the Geological Society (1982) 139 (6): 779–785.
... into the Upper Campanian to possibly lowermost Tertiary Marambio Group comprised of the Lopez de Bertodano and Sobral formations and the Lower Tertiary Cross Valley and La Meseta formations of the Seymour Island Group. The Lopez de Bertodano Formation consists of c . 1067 m of medium-grained to silty...
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.258.01.04
EISBN: 9781862395060
... in Antarctica. Angiosperm pollen, which first appears in the early Albian Kotick Point Formation (Dettman & Thomson 1987; Riding & Crame 2002 ) on James Ross Island, increases in abundance in Turonian strata ( Keating et al. 1992 ) and maintains high levels throughout the Marambio Group strata...
FIGURES
Journal Article
Published: 01 December 1991
Journal of the Geological Society (1991) 148 (6): 1125–1140.
... component formations of the Upper Cretaceous-lower Tertiary Marambio Group. The lower Santa Marta Formation is approximately 1100m thick and has three constituent members. Ammonites within the Santa Marta Formation indicate an early to late Campanian age assignment. Dinoflagellates suggest that the lower...
Series: GSA Memoirs
Published: 01 January 1988
DOI: 10.1130/MEM169-p541
...; (2) a Lower to Upper Cretaceous conglomerate-sandstone-mudstone-tuff assemblage, the Gustav Group and equivalents; (3) an Upper Cretaceous to Paleocene poorly consolidated sand, silt, mud and tuff sequence, the Marambio Group and equivalents; and (4) an Eocene sequence of weakly consolidated...
Journal Article
Published: 09 March 2016
Journal of the Geological Society (2016) 173 (4): 587–602.
...F. Hervé; M. Calderon; C. M. Fanning; R. J. Pankhurst; F. Fuentes; C. W. Rapela; J. Correa; P. Quezada; C. Marambio Abstract Supposed or potential Devonian igneous rocks in the accretionary complex of southern Chile were investigated using sensitive high-resolution ion microprobe U–Pb dating...
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Journal Article
Published: 01 May 2014
Journal of Paleontology (2014) 88 (3): 411–420.
..., in the southeastern part of the island. The geology consists of Cretaceous marine sediments assigned to the Gustav Group and Marambio Group, part of the Larsen Basin ( Scasso et al., 1991 ; Hathway, 2000 ) intruded by the James Ross Island Volcanic Group, a Neogene alkali volcanic sequence composed mainly of lava...
FIGURES
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.258.01.13
EISBN: 9781862395060
... of the ungulate taxa into pre-Casamayoran palaeofaunas in Patagonia now indicate a possibility for a Riochican-age source for the La Meseta ungulates as well. The La Meseta palaeofauna (LMP) and the Vacan-aged palaeofauna from Patagonia (PVP) differ with regard to major taxonomic groups (at the family level...
FIGURES | View All (6)
Journal Article
Published: 18 September 2018
Journal of Sedimentary Research (2018) 88 (9): 991–1025.
..., because they provide evidence for marginal-marine and shallow-marine tide- and storm-influenced processes in the Unayzah Group during deposition of the Wudayhi Member of the Nuayyim Formation. Furthermore, it establishes a framework than can be linked to fully marine coeval deposits southeastern...
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FIGURE 1 —Location of study area, geology, and generalized stratigraphy of ...
in > PALAIOS
Published: 01 December 2007
FIGURE 1 —Location of study area, geology, and generalized stratigraphy of the Marambio Group
Journal Article
Published: 01 November 2020
Journal of Paleontology (2020) 94 (6): 1076–1081.
...Jeffrey D. Stilwell; John St. J. S. Buckeridge; Joseph J. Bevitt; David Zahra Abstract Assessment of unique and potentially significant fossils may be considerably compromised by surrounding matrix. This paper assesses a fossil barnacle group from the mid to late Eocene of Seymour Island, off...
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Journal Article
Published: 01 September 2002
Geological Magazine (2002) 139 (5): 577–594.
... at Fiordo Belén were resolved, and additional samples were obtained. The volcanic sequence at Fiordo Belén unconformably overlies Cretaceous strata of the Marambio Group (Fig. 2a ), and consists locally of palagonitic breccias and tuffs, and basaltic lavas. Two breccia units, a lower and an upper...
FIGURES | View All (12)
Journal Article
Published: 01 November 2010
Journal of Paleontology (2010) 84 (6): 1061–1070.
... bird remains, including Sphenisciformes (penguins) and one record tentatively assigned to cf. Ardeidae (egrets). Two different groups of penguins have been recognized from these localities. The first group is similar in size to the smallest taxa previously described from Seymour Island, Marambiornis...
FIGURES | View All (7)
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.258.01.02
EISBN: 9781862395060
... in the Patagonia–Antarctic Peninsula region during the mid-Mesozoic-early Cenozoic ( Hathway 2000 ). The Cretaceous basin fill comprises a regressive mega-sequence of arc-derived clastic and volcaniclastic marine rocks that has been subdivided into the older Gustav Group (Aptian–Coniacian) and the younger Marambio...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP381.20
EISBN: 9781862396401
... strata of the James Ross Basin (Figs 1 & 2 ) comprise a thick sequence of marine sedimentary rocks divided into three lithostratigraphic groups: the basal Gustav Group (Aptian–Coniacian), the intermediate Marambio Group (Santonian–Danian), and the upper Seymour Island Group (Palaeogene; e.g...
FIGURES | View All (8)
Journal Article
Published: 01 March 2012
Journal of Sedimentary Research (2012) 82 (3): 149–162.
...) also described erosionally based tidal sandstones from the Haslum Crag Sandstone in the Cretaceous Marambio Group of Antarctic Peninsula. These subtidal sandbodies compose a forced-regressive package recording the incision, migration, and filling of relatively large and deep subtidal channels...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.258.01.08
EISBN: 9781862395060
..., coarser grained Gustav Group (Aptian–Coniacian) and an upper, finer grained Marambio Group (Coniacian–Danian) (e.g. Hathway 2000 ; Crame et al . 2004 and references therein). The regional dip throughout the greater part of the island group is approximately 10°SE, and the Seymour Island Group...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.258.01.10
EISBN: 9781862395060
... described here. Locality IAA 1/90 is within the Cucullaea I Member of the La Meseta Formation. The late Early–latest Late Eocene La Meseta Formation ( Elliot & Trautman 1982 ; Marenssi et al . 1998 ) crops out in the northern third of Seymour (Marambio) Island, some 100 km off the northern...
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