Lithium isotope variations in Tonga–Kermadec arc–Lau back‐arc lavas and Deep Sea Drilling Project (DSDP) Site 204 sediments
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چکیده
منابع مشابه
17. Iron-rich Sediments Cored during Leg 8 of the Deep Sea Drilling Project
A sequence of amorphous iron r>xide-rich sediments, interbedded with iron-free calcareous nannoplankton oozes, occurs in the basal zones of Sites 74 and 75 of the Deep Sea Drilling Project, immediately overlying basalt. These sediments have affinities with iron and manganeserich sediments previously described from the crest of the East Pacific Rise. It is considered most likely that this sedime...
متن کامل8. Molecular and Isotopic Compositions of Hydrocarbons at Site 533, Deep Sea Drilling Project Leg 76
In an investigation of gas hydrates in deep ocean sediments, gas samples from Deep Sea Drilling Project Site 533 on the Blake Outer Ridge in the northwest Atlantic were obtained for molecular and isotopic analyses. Gas samples were collected from the first successful deployment of a pressure core barrel (PCB) in a hydrate region. The pressure decline curves from two of the four PCB retrievals a...
متن کامل24. Late Paleogene and Early Neogene Foraminifers of Deep Sea Drilling Project Site 270, Ross Sea, Antarctica
Foraminifers from the upper Oligocene, lower Miocene, and Pleistocene at Site 270 in the southern Ross Sea, Antarctica, are discussed and illustrated. The total fauna comprises 74 genera and 163 species. A small number of taxa are recycled from Cretaceous and older Paleogene sediments. Four assemblage zones are proposed, the age of informal lithologic units discussed, and potentially important ...
متن کاملOxygen Isotope Variations of Basaltic Lavas and Upper Mantle Rocks
This chapter summarizes the oxygen isotope geochemistry of terrestrial basalts and their mantle sources, including the conceptual framework for interpreting such data and the phenomenology of known variations. In particular, the first section outlines the motivations for and first-order results of oxygen isotope studies of terrestrial and lunar basalts over the last 30 years; the second section...
متن کامل14. Oligocene to Recent Calcareous Nannoplankton from the Philippine Sea, Deep Sea Drilling Project Leg 59
During Leg 59 of the Deep Sea Drilling Project, five sites (447 to 451) were occupied and seven holes drilled between Okinawa and Guam in the Philippine Sea (Fig. 1). All holes except Hole 447 yielded common calcareous nannoplankton at certain intervals cored. Nannoplankton assemblages and their age assignments will be discussed for each site, and fossil lists for selected samples from Holes 44...
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ژورنال
عنوان ژورنال: Island Arc
سال: 2018
ISSN: 1038-4871,1440-1738
DOI: 10.1111/iar.12276