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Article
Glacial and deglacial seafloor methane emissions from pockmarks on the northern flank of the Storegga Slide complex
The Storegga Slide complex is a multi-stage slope failure on the Norwegian continental margin where the most recent major event occurred 8.1 ka b.p. (calendar years before present). Its northern flank contains po...
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Chapter
Submarine Mass Transport Within Monterey Canyon: Benthic Disturbance Controls on the Distribution of Chemosynthetic Biological Communities
Documenting mass transport within Monterey Canyon and Fan has been a focus of remotely operated vehicle (ROV) observations, sampling, monitoring, and multibeam map** studies. These efforts indicate that majo...
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Article
Geochemical constraints on the distribution of gas hydrates in the Gulf of Mexico
Gas hydrates are common within near-seafloor sediments immediately surrounding fluid and gas venting sites on the continental slope of the northern Gulf of Mexico. However, the distribution of gas hydrates wit...
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Article
Bioerosion by chemosynthetic biological communities on Holocene submarine slide scars
Geomorphic, stratigraphic, and faunal observations of submarine slide scars that occur along the flanks of Monterey Canyon in 2.0–2.5 km water depths were made to identify the processes that continue to alter ...
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Article
Caught in the act: the 20 December 2001 gravity flow event in Monterey Canyon
A sediment gravity flow descended through the axis of Monterey Canyon on 20 December 2001 at 13:35 Pacific standard time. The timing of this event is documented by a current-meter package which recorded an 11....
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Article
An experiment demonstrating that marine slum** is a mechanism to transfer methane from seafloor gas-hydrate deposits into the upper ocean and atmosphere
The scientific community is engaged in a lively debate over whether and how venting from the gas-hydrate reservoir and the Earth’s climate is connected. The various scenarios which have been proposed are based...
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Article
Submarine karst belt rimming the continental slope in the Straits of Florida
Nine submarine sinkholes have been surveyed and mapped with side-looking sonar and echo-sounder profiles in the Straits of Florida. These structures are irregularly distributed across the surface of the South...
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Article
Freshwater ice rafting: an additional mechanism for the formation of some high-latitude submarine pockmarks
Submarine pockmarks are common features on high-latitude continental shelves, yet the mechanisms for their formation are poorly understood. Here we propose an additional mechanism for the formation of high-la...
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Article
Effects of ion exclusion and isotopic fractionation on pore water geochemistry during gas hydrate formation and decomposition
The effects of ion exclusion and isotopic fractionation associated with gas hydrate formation and decomposition in continental margin sediments are examined using simple mass balance calculations. In a closed ...
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Article
Evidence for gas accumulation associated with diapirism and gas hydrates at the head of the Cape Fear Slide
Single-channel seismic reflection profiles show evidence for areas of significant gas accumulation at the head of the Cape Fear Slide on the continental rise off North Carolina. Gas accumulation appears to occ...
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Article
Old carbon in living organisms and young CaC03 cements from abyssal brine seeps
ABYSSAL brine springs at the base of the Florida Escarpment in the Gulf of Mexico (∼3,280 m, 26° O2' N 84° 55' W) are surrounded by communities of abundant heterotrophic organisms1–4 and carbonate-cemented crusts
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Article
Stable isotope evidence for chemosynthesis in an abyssal seep community
Communities of abundant organisms, similar to those which surround the hydrothermal vents of the East Pacific Rise (EPR), occur in 3,266 m of water in the Gulf of Mexico. They were discovered with the Alvin at 26...