Volcanogenic copper and zinc minerals of Early-Cretaceous deposits in the central northwestern Pacific, Deep Sea Drilling Project, Leg 62

Author(s): Lazur, Yu. M.; Varentsov, I. M.; Yermilov, V. V.
Author Affiliation(s): Primary:
USSR Acad. Sci., Geol. Inst., Moscow, USSR
Volume Title: Chemie der Erde
Source: Chemie der Erde, 43(2), p.129-137. Publisher: Gustav Fischer Verlag, Jena, Federal Republic of Germany. ISSN: 0009-2819 CODEN: CERDAA
Note: In English with German summary. 16 refs.; illus.
Summary: Microprobe analysis was used to study the Early Cretaceous volcanogenic-calcareous deposits in the western part of the Mid-Pacific mountains and of Hess Rise (DSDP holes 463, 465, 465A and 466). The typical mineral forms of heavy metals were established: finely dispersed sulphides of Fe, Cu and Zn. The native alloys of Cu + Zn are of subordinate importance; they are present in the volcanoclastic components and are formed during the reduction stage of endogenic evolution of basalts. The Fe, Cu and Zn sulphides were formed via diagenesis of sediments enriched in metals of volcanogenic hydrothermal origin and in organic matter. These components reflect the principal features of mineralogical and geochemical peculiarities of Mesozoic sedimentation in the region.
Year of Publication: 1984
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 06 Petrology, Sedimentary; 07 Marine Geology and Oceanography; Composition; Copper minerals; Cretaceous; DSDP Site 463; DSDP Site 465; DSDP Site 466; Deep Sea Drilling Project; Hess Rise; IPOD; Igneous rocks; Leg 62; Lower Cretaceous; Mesozoic; Mineral composition; North Pacific; Northwest Pacific; Oceanography; Pacific Ocean; Pyroclastics; Sedimentary petrology; Sedimentary rocks; Sulfides; Volcanic rocks; West Pacific; X-ray data; Zinc minerals
Coordinates: N200000 N400000 W1730000 W1780000
Record ID: 1984039775
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom