Fossil Methane Seep Deposits and Communities from the Mesozoic of Antarctica

James D Witts; Crispin T. S Little

doi:10.1007/978-3-031-05623-9_19

Fossil Methane Seep Deposits and Communities from the Mesozoic of Antarctica

James D Witts
, Crispin T. S Little

School of Earth Sciences

Research output: Chapter in Book/Report/Conference proceeding › Chapter in a book

Abstract

The Antarctic Peninsula region is host to two areas where Mesozoic hydrocarbon seep deposits are found. The oldest is dated to the latest Jurassic (Tithonian) and is found within the Atoll Nunatacks Formation of the Fossil Bluff Group which crops out on eastern Alexander Island. It represents a methane seep that developed in a faulted forearc setting to the west of a long-lived magmatic arc. The fauna is dominated by hokkaidoconchid gastropods. Two islands in the James Ross Basin host multiple seep deposits in sediments dated to the latest Cretaceous (Maastrichtian), which crop out on Snow Hill and Seymour islands. These seeps are formed in a backarc basin setting and are dominated by thyasirid, lucinid, and solemyid bivalves. Mesozoic methane seep deposits from Antarctica provide a unique insight into the evolution of seep communities and high-latitude marine palaeoenvironments.

Original language	English
Title of host publication	Ancient Hydrocarbon Seeps
Editors	Andrzej Kaim, J. Kirk Cochran, Neil H. Landman
Publisher	Springer, Cham
Chapter	15
Pages	555-569
Number of pages	15
Volume	50
ISBN (Electronic)	0275-0120
DOIs	https://doi.org/10.1007/978-3-031-05623-9_19
Publication status	Published - 31 Aug 2022

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SDG 14 Life Below Water

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abstract = "The Antarctic Peninsula region is host to two areas where Mesozoic hydrocarbon seep deposits are found. The oldest is dated to the latest Jurassic (Tithonian) and is found within the Atoll Nunatacks Formation of the Fossil Bluff Group which crops out on eastern Alexander Island. It represents a methane seep that developed in a faulted forearc setting to the west of a long-lived magmatic arc. The fauna is dominated by hokkaidoconchid gastropods. Two islands in the James Ross Basin host multiple seep deposits in sediments dated to the latest Cretaceous (Maastrichtian), which crop out on Snow Hill and Seymour islands. These seeps are formed in a backarc basin setting and are dominated by thyasirid, lucinid, and solemyid bivalves. Mesozoic methane seep deposits from Antarctica provide a unique insight into the evolution of seep communities and high-latitude marine palaeoenvironments.",

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N2 - The Antarctic Peninsula region is host to two areas where Mesozoic hydrocarbon seep deposits are found. The oldest is dated to the latest Jurassic (Tithonian) and is found within the Atoll Nunatacks Formation of the Fossil Bluff Group which crops out on eastern Alexander Island. It represents a methane seep that developed in a faulted forearc setting to the west of a long-lived magmatic arc. The fauna is dominated by hokkaidoconchid gastropods. Two islands in the James Ross Basin host multiple seep deposits in sediments dated to the latest Cretaceous (Maastrichtian), which crop out on Snow Hill and Seymour islands. These seeps are formed in a backarc basin setting and are dominated by thyasirid, lucinid, and solemyid bivalves. Mesozoic methane seep deposits from Antarctica provide a unique insight into the evolution of seep communities and high-latitude marine palaeoenvironments.

AB - The Antarctic Peninsula region is host to two areas where Mesozoic hydrocarbon seep deposits are found. The oldest is dated to the latest Jurassic (Tithonian) and is found within the Atoll Nunatacks Formation of the Fossil Bluff Group which crops out on eastern Alexander Island. It represents a methane seep that developed in a faulted forearc setting to the west of a long-lived magmatic arc. The fauna is dominated by hokkaidoconchid gastropods. Two islands in the James Ross Basin host multiple seep deposits in sediments dated to the latest Cretaceous (Maastrichtian), which crop out on Snow Hill and Seymour islands. These seeps are formed in a backarc basin setting and are dominated by thyasirid, lucinid, and solemyid bivalves. Mesozoic methane seep deposits from Antarctica provide a unique insight into the evolution of seep communities and high-latitude marine palaeoenvironments.

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A2 - Landman, Neil H.

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ER -

Fossil Methane Seep Deposits and Communities from the Mesozoic of Antarctica

Abstract

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