Baker, Earl W; Louda, William (1980): Products of chlorophyll diagenesis from DSDP Leg 57 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.823182, Supplement to: Baker, EW; Louda, W (1980): Products of chlorophyll diagenesis in Japan Trench sediments, Deep Sea Drilling Project Sites 438, 439, and 440. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1397-1408, https://doi.org/10.2973/dsdp.proc.5657.172.1980
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Abstract:
Tetrapyrrole pigments isolated from sediments retrieved during Leg 57 include pheophytin-a, a myriad of chlorins, free-base deoxophylloerythroetioporphyrin (DPEP), as well as copper and nickel porphyrins. Their richness, both qualitatively and quantitatively, in chlorin tetrapyrroles affords a relatively complete study on the early diagenesis of chlorophyll. Our studies, coupled with those in the preceding chapter by Louda et al., point out the influence of pre- and postdepositional environments upon the mode of chlorophyll diagenesis. Formation of tetrapyrroles, collectively called "petroporphyrins," is seen to occur in only a limited set of environmental conditions (see Baker and Palmer, 1978). The more generalized route of chlorophyll diagenesis, at least in the ocean, results in removal of tetrapyrrole pigment, from the fossil record. Late diagenetic products, metalloporphyrins, are found to represent an extremely minor component of the tetrapyrrole assemblage in sediments studied from the Japan Trench.
The products of chlorophyll diagenesis isolated from Japan Trench sediments allow expansion of previous diagenetic schemes (Baker and Palmer, 1978; Triebs, 1936) and indicate directions for future studies.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 40.180047 * Median Longitude: 143.585733 * South-bound Latitude: 39.735500 * West-bound Longitude: 143.231700 * North-bound Latitude: 40.630000 * East-bound Longitude: 143.929000
Date/Time Start: 1977-10-19T00:00:00 * Date/Time End: 1977-11-10T00:00:00
Event(s):
57-438 * Latitude: 40.629200 * Longitude: 143.231700 * Date/Time: 1977-10-19T00:00:00 * Elevation: -1552.0 m * Penetration: 109.5 m * Recovery: 82.1 m * Location: North Pacific/BASIN * Campaign: Leg57 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 90.5 m cored; 19 m drilled; 90.7 % recovery
57-438A * Latitude: 40.629800 * Longitude: 143.235800 * Date/Time: 1977-10-19T00:00:00 * Elevation: -1558.0 m * Penetration: 878 m * Recovery: 535.5 m * Location: North Pacific/BASIN * Campaign: Leg57 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 83 cores; 780.5 m cored; 0 m drilled; 68.6 % recovery
57-438B * Latitude: 40.630000 * Longitude: 143.246700 * Date/Time: 1977-10-19T00:00:00 * Elevation: -1564.0 m * Penetration: 1040.7 m * Recovery: 84.2 m * Location: North Pacific/BASIN * Campaign: Leg57 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 206.5 m cored; 0 m drilled; 40.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Baker, EW; Louda, W (1980): (Table 3) Approximate composition of tetrapyrrole pigment isolates at DSDP Leg 57 Holes. https://doi.org/10.1594/PANGAEA.823181
- Baker, EW; Louda, W (1980): (Table 1) Sample description and tetrapyrrole pigment yield from DSDP Leg 57 Holes. https://doi.org/10.1594/PANGAEA.823180