Hydrocarbon seep-carbonates of a Miocene forearc (East Coast Basin), North Island, New Zealand

Fossil vesicomyid bivalves from Miocene hydrocarbon seep sites, North Island, New Zealand

“…Foraminiferal data (e.g., Hayward 1986) and lithological comparison to dredgings from modern NZ seeps (Saether et al 2010b) suggest that these vesicomyids likely occupied seep environments at roughly 500-2000 m depth in the Miocene. The lithological, stable isotopic and faunal character of these fossil seep deposits have been described in detail elsewhere (Campbell et al 2008;Saether et al 2010aSaether et al , b, 2012Saether 2011 Dall and Simpson, 1901Subfamily Pliocardiinae Woodring, 1925?Genus Pliocardia Woodring, 1925 Type species: Anomalocardia bowdeniana Dall, 1903; Bowden Formation, Late Pliocene, Bowden, Jamaica.…”

“…Similar limestones also have been reported from the southern Hawke's Bay area, which were mapped as the Ihungia Limestone by Lillie (1953). Campbell et al (2008) boundary was initiated offshore eastern North Island, and are preserved today in deformed and uplifted deep-marine forearc strata for 300 km along the continental margin, from East Cape to Dannevirke (Fig. 1).…”

“…Subsequent study of the Miocene seep limestone localities from New Zealand has recognized 16 sites, and described the petrographic, stable isotopic and paleontological character of several of the deposits (Ewen 2009;Troup 2010;Saether et al 2010aSaether et al , b, 2012Saether 2011). Campbell et al (2008) and Saether (2011) illustrated fossil vesicomyids from seven locations in the Hawke's Bay area (Fig. 1), and briefly compared them with the modern vesicomyids offshore.…”

Mechanisms of biogenic gas migration revealed by seep carbonate paragenesis, Panoche Hills, California

“…In contrast with the scarce distribution of tube worms and mussels in outcrop B, these species are often regrouped in dense bush and pavement structures on modern sea-floor observations (Levin, 2005;Judd and Hovland, 2007) and in the fossil records (Campbell et al, 2008). Lucinids in association with tube worms have been reported (Hashimoto et al, 1995); however, little is known about the distribution of lucinids around seeps because of their endobentic habitat.…”

Finding of the first fossil seep in the emerged coast of Central Chile (33°56’ S). Characterization and implications.

“…Según los registros existentes a través del margen continental del Pacífico Norte, el género Lucinoma ha sido dominante en cold seeps del Oligoceno y Neógeno (Campbell, 2006;. Para el Pacífico Sur, en tanto, la existencia de este género, asociado a cold seeps fósiles, solo se había reportado previamente en af loramientos de Nueva Zelanda, correspondientes a ambientes de talud del Mioceno Temprano a Tardío (Campbell, 2006;Campbell et al, 2008). De acuerdo a lo anterior, la especie Lucinoma promaucana, dominante en el PSN, sería consistente con profundidades de talud y edades Mioceno Temprano a Medio.…”