Photosynthetic Pigments Contained in Surface Sediments from the Hydrothermal System of Guaymas Basin, Gulf of California
Table 1
Physical characteristics of the sediment samples obtained by the DSRV Alvin in the Guaymas Basin, Gulf of California (Cruise AT 15-38).
DSRV-Alvin Immersion No.
Core
Location
Position
4457
3
Oil Town
27° 00.7039′ N
111°′24.3179 W
Substrate: the temperature recorded in the first 0-20 cm of depth was 30°C (ambient temperature). White and orange bacterial mats were found on surface.
4459
10
Oil Town
27° 00.7039′ N
111° 24.3179′ W
Substrate: the temperature recorded in the first 0-20 cm of depth was > 200°C. High concentrations of oil and gas were observed. The external matrix with bacterial growth, consisting of Beggiatoa spp. patches.
4460
1
Great Pagoda
27° 00.67636′ N
11° 24.416833′ W
Substrate: the temperature has a gradient of 19.2 to 71.0°C in the first 6 cm depth. Orange bacterial mat was found on surface.
4460
11
Great Pagoda
27° 00.67636′ N
11° 24.41683′ W
Substrate: the temperature has a gradient of 5 to 16°C in the first 6 cm depth. Olive green-black sediment. Yellow Beggiatoa spp. bacterial mat was found.
