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Series: GSA Special Papers
Published: 01 October 2015
DOI: 10.1130/2015.2514(01)
... It is widely assumed that the boundary layer above the core is the source of intraplate volcanoes such as Hawaii, Samoa, and Yellowstone, and that the sub-plate boundary layer at the top of the mantle is thin and entirely subsolidus. In fact, this upper layer is thicker and has higher...
Series: GSA Special Papers
Published: 01 October 2015
DOI: 10.1130/2015.2514(02)
... Near-vertical multiple ScS (S waves reflected at the core-mantle boundary) phases are among the cleanest seismic phases traveling over several thousand kilometers in the Earth's mantle and are useful for constraining the average attenuation and shear wave speed in the whole mantle. However...
Series: GSA Special Papers
Published: 01 January 1970
DOI: 10.1130/SPE125-p1
... A deep rotary core drilling project in 1957 at Site 2 on the Greenland ice sheet (76°59′N., 56°04′W.) provided ice core to a depth of 411 m. The vertical variation in bulk density, macroscopic structure, oxygen isotope ratios, ionic constituents, and extraterrestrial dust (black spherules...
Series: GSA Special Papers
Published: 01 January 1942
DOI: 10.1130/SPE36-p103
... 4. The Earth’s core 106 1. Benfield, Z. f. Geophys. 13, 157, 1937. 2. Birch, Bull. Seism. Soc. Amer. 29, 463, 1939. 3. Bullen, M. N. R. A. S. Geophys. Supp. 3, 395, 1936. 4. Bullen, Trans. Roy. Soc. New Zealand, 67, 122, 1937. 5. Bullen, idem, 69, 188, 1939. 6. Bullen, Bull...