Lithic grain and mineral composition of sand and sandstones from the North Pacific Ocean and the Bering Sea (Table 3) ...

• Main Authors: Gergen, Leslie Dickson, Ingersoll, Raymond V
• Format: Dataset
• Language: English
• Published: PANGAEA 1986
• Subjects: Event label; Sample code/label; Quartz; Feldspar; Lithic grains; Quartz, polycrystalline; Quartz, monocrystalline; Plagioclase; Kalifeldspar; Phyllosilicate; Heavy minerals; Plagioclase/Feldspar ratio; Quartz, polycrystalline/quartz, total ratio; AGE; Drilling/drill rig; Point counting; Leg5; Leg18; Leg19; Glomar Challenger; Deep Sea Drilling Project DSDP; Bering Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.763507; https://doi.pangaea.de/10.1594/PANGAEA.763507

Sand and sandstone compositions from different types of basins reflect provenance terranes governed by plate tectonics. One hundred and one thin sections of Upper Miocene to Holocene sand-sized material were examined from DSDP/IPOD Sites in the North Pacific Ocean and the Bering Sea. The Gazzi-Dickinson point-counting method was used to establish compositional characteristics of sands from different tectonic settings. Continental margin forearc sands from the western North America continental margin arc system are clearly different from backarc/marginal-sea sands from the Aleutian intraoceanic arc system. The forearc sands have average QFL percentages of 29-42-29, LmLvLst percentages of 32-34-34, 3 Fmwk%M and 0.82 P/F. Aleutian backarc sands have average QFL percentages of 8-22-69. LmLvLst percentages of 9-85-6, 0.5 Fmwk%M and 0.96 P/F. A trend of increasing QFL%Q and decreasing LmLvLst%Lv westward in the backarc region of the Aleutian Ridge reflects the influence of the Asiatic continental margin. Aleutian ... : Supplement to: Gergen, Leslie Dickson; Ingersoll, Raymond V (1986): Petrology andprovenanve of Deep Sea Drilling Project sand and sandstone from the North Pacific Ocean and the Bearing Sea. Sedimentary Geology, 51(1-2), 29-56 ...