Chamley, Hervè; Coulon, Hervé; Debrabant, Pierre; Holtzapffel, Thierry (1986): Mineralogy micromorphology, and geochemistry at DSDP Site 89-585 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.793289, Supplement to: Chamley, H et al. (1986): Cretaceous interactions between volcanism and sedimentation in the East Mariana Basin, from mineralogical, micromorphological, and geochemical investigations, Deep Sea Drilling Project Site 585. In: Moberly, R; Schlanger, SO; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 89, 413-429, https://doi.org/10.2973/dsdp.proc.89.113.1986
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Abstract:
At Site 585 of Deep Sea Drilling Project Leg 89 more than 500 m of volcaniclastic to argillaceous middle-Late Cretaceous sediments were recovered. Analyses by X-ray diffraction (bulk sediment and clay fraction), transmission electron microscopy, molecular and atomic absorption, and electron microprobe were done on Site 585 samples. We identify four successive stages and interpret them as the expression of environments evolving under successive influences: Stage 1, late Aptian to early Albian - subaerial and proximal volcanism, chiefly expressed by the presence of augite, analcite, olivine, celadonite, small and well-shaped transparent trioctahedral saponite, Al hydroxides, Na, Fe, Mg, and various trace elements (Mn, Ni, Cr, Co, Pb, V, Zn, Ti).
Stage 2, early to middle Albian - submarine and less proximal volcanic influence, characterized by dioctahedral and hairy Mg-beidellites, a paucity of analcite and pyroxenes, the presence of Mg and K, and local alteration of Mg-smectites to Mg-chlorites.
Stage 3, middle Albian to middle Campanian - early marine diagenesis, marked by the development of recrystallization from fleecy smectites to lathed ones (all of alkaline Si-rich Fe-beidellite types), by the development of opal CT and clinoptilolite, and by proximal to distal volcanic influences (Na parallel to Ti, K). Local events consist of the supply of reworked palygorskite during the Albian-Cenomanian, and the recurrence of proximal volcanic activity during the early Campanian.
Stage 4, late Campanian to Maestrichtian - development of terrigenous supply resulting from the submersion of topographic barriers; this terrigenous supply is associated with minor diagenetic effects and is marked by a clay diversification (beidellite, illite, kaolinite, palygorskite), the rareness of clay recrystallizations, and the disappearance of volcanic markers.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 13.483300 * Longitude: 156.815200
Date/Time Start: 1982-10-18T00:00:00 * Date/Time End: 1982-10-18T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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6 datasets
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Datasets listed in this publication series
- Chamley, H; Coulon, H; Debrabant, P et al. (1986): (Table 4) Geochemistry at DSDP Hole 89-585. https://doi.org/10.1594/PANGAEA.793284
- Chamley, H; Coulon, H; Debrabant, P et al. (1986): (Table 2) Bulk mineralogy at DSDP Site 89-585. https://doi.org/10.1594/PANGAEA.793282
- Chamley, H; Coulon, H; Debrabant, P et al. (1986): (Table 3) Clay mineralogy at DSDP Site 89-585. https://doi.org/10.1594/PANGAEA.793283
- Chamley, H; Coulon, H; Debrabant, P et al. (1986): (Table 7) Microchemistry of feldspars at DSDP Site 89-585. https://doi.org/10.1594/PANGAEA.793287
- Chamley, H; Coulon, H; Debrabant, P et al. (1986): (Table 6) Microchemistry of smectites at DSDP Site 89-585. https://doi.org/10.1594/PANGAEA.793286
- Chamley, H; Coulon, H; Debrabant, P et al. (1986): (Table 5) Geochemistry at DSDP Hole 89-585A. https://doi.org/10.1594/PANGAEA.793288