Contrast of metamorphic and structural histories across the work channel lineament, Coast Plutonic Complex, British Columbia
نویسندگان
چکیده
منابع مشابه
Oxygen 18/Oxygen 16 and D/H Studies of Plutonic Granitic and Metamorphic Rocks Across the Cordilleran Batholiths of Southern British Columbia
Hydrogen and oxygen isotope ratios of 500 samples, mainly from granitic plutons, were measured along a 700-km, E-W traverse across the "accreted terranes" of southern British Columbia (latitudes 49ø-52øN). Despite the geological complexity and range of intrusive ages (Late Triassic to Tertiary) and although there are "steps" in the isotopic values at some geologic boundaries (e.g., across the S...
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High-grade, migmatitic paragneisses (820°C, 8 kbar peak conditions) of the Valhalla metamorphic core complex experienced the retrograde net transfer reaction (ReNTR): garnet + melt + K-feldspar = sillimanite + biotite + plagioclase during cooling and crystallization of the melt, resulting in an increase in the Fe/(Fe + Mg) of both garnet and biotite at their margins. Diffusion profiles generate...
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A nar row, elon gate re gion of an oma lously high meta mor phic grade runs par al lel to Kootenay Lake, in the cen tral part of the Kootenay Arc, south east ern Brit ish Co lum bia. Meta mor phic grade ranges from the chlorite/bi o tite zones on the flanks to the sillimanite+K-feld spar zone in the cen tre of the high. In this pa per, we pres ent a sum mary of struc tural, meta mor phic and ge...
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the speech act of disagreement has been one of the speech acts that has received the least attention in the field of pragmatics. this study investigates the ways power relations, social distance, formality of the context, gender, and language proficiency (for efl learners) influence disagreement and politeness strategies. the participants of the study were 200 male and female native persian s...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 1982
ISSN: 0148-0227
DOI: 10.1029/jb087ib05p03849