Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island

Dolding, Philip J.D.. 1992 Palynology of the Marambio Group (Upper Cretaceous) of northern Humps Island. Antarctic Science, 4 (03). 311-326. 10.1017/S0954102092000476

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Official URL: https://doi.org/10.1017/S0954102092000476

Abstract/Summary

Palynological analyses of the Marambio Group sediments of Humps Island (Santa Marta and López de Bertodano formations) indicates that there is minor displacement across a prominent NW–SE trending normal fault which passes beneath the southern bluff. No major compositional differences were perceived between the palynomorph assemblages either side of the fault. A late Campanian age is suggested for both sequences, based on comparison with Australasian dinoflagellate cyst zonations. A new species of the dinoflagellate cyst Bourkidinium has been recorded from strata on either side of the fault. A significant number of recycled Permian and Early Cretaceous palynomorphs were recorded. Most are miospores and exhibit significant variation in preservational states, implying derivation from several sources. More thermally mature Permian gymnosperm pollen is most likely derived from the nearby Trinity Peninsula Group, exposed on the Antarctic Peninsula. The source of the relatively well preserved Permian pollen is problematic.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1017/S0954102092000476
ISSN:	0954-1020
Additional Keywords:	Antarctic Peninsula, Humps Island, late Campanian, palynology
NORA Subject Terms:	Botany
Date made live:	21 Nov 2017 10:02 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/518431

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1017/S0954102092000476

ISSN:

0954-1020

Additional Keywords:

Antarctic Peninsula, Humps Island, late Campanian, palynology

NORA Subject Terms:

Botany

Date made live:

21 Nov 2017 10:02 +0 (UTC)