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- W4224256576 abstract "Cenozoic basalts with low ε Nd (T) values (≤ +3) were recognized in southwest North America (SWNA) over 30 years ago and triggered an ongoing debate on whether this characteristic requires involvement of ancient continental lithospheric mantle (CLM) in basalt genesis. The abundant geochemical data now available from the SWNA basalts and entrained mantle xenoliths support such involvement and add insights into the Cenozoic tectonic evolution of the CLM of this region. For example, low εNd (T) and ε Hf (T) ultramafic xenoliths have been identified and confirm that LREE-enriched, Precambrian CLM with isotopic compositions that overlap those of Cenozoic basalts existed beneath SWNA. High precision trace element data further demonstrate that low εNd (T) basalts can be subdivided into two groups based on whole rock Ta/Th values. Low Ta/Th (< 0.2) basalts are arc-related melts generated in the asthenospheric mantle wedge that interacted with preexisting CLM during ascent. Intermediate Ta/Th (0.2 to 0.6) basalts are likely melts of CLM metasomatized by aqueous fluids derived from shallowly subducting oceanic lithosphere during the Laramide Orogeny. In situ melting of the metasomatized CLM after removal of subducted oceanic lithosphere produced the intermediate Ta/Th group rocks and potentially triggered weakening and return of CLM to the convecting mantle. Thinning of CLM allowed upwelling and decompression melting of asthenosphere and the eruption of high εNd (T) (> +3), high Ta/Th (> 0.6) basalts across the Basin and Range Province beginning at ~20 Ma and continuing to the present day." @default.
- W4224256576 created "2022-04-26" @default.
- W4224256576 creator A5090691610 @default.
- W4224256576 date "2022-04-15" @default.
- W4224256576 modified "2023-10-16" @default.
- W4224256576 title "Reassessing the Role of Continental Lithospheric Mantle in Cenozoic Magmatism, Southwestern North America" @default.
- W4224256576 cites W1180268122 @default.
- W4224256576 cites W1561977714 @default.
- W4224256576 cites W1641796164 @default.
- W4224256576 cites W1662594047 @default.
- W4224256576 cites W1694834957 @default.
- W4224256576 cites W1964849110 @default.
- W4224256576 cites W1965073694 @default.
- W4224256576 cites W1965804058 @default.
- W4224256576 cites W1966540505 @default.
- W4224256576 cites W1968587976 @default.
- W4224256576 cites W1971201704 @default.
- W4224256576 cites W1974882281 @default.
- W4224256576 cites W1977471107 @default.
- W4224256576 cites W1992766621 @default.
- W4224256576 cites W1993237730 @default.
- W4224256576 cites W1994337139 @default.
- W4224256576 cites W1997086514 @default.
- W4224256576 cites W2002402847 @default.
- W4224256576 cites W2004627753 @default.
- W4224256576 cites W2004789205 @default.
- W4224256576 cites W2004993774 @default.
- W4224256576 cites W2007377958 @default.
- W4224256576 cites W2011607179 @default.
- W4224256576 cites W2015577392 @default.
- W4224256576 cites W2018166835 @default.
- W4224256576 cites W2027323798 @default.
- W4224256576 cites W2029737322 @default.
- W4224256576 cites W2029918062 @default.
- W4224256576 cites W2032430672 @default.
- W4224256576 cites W2036153230 @default.
- W4224256576 cites W2036507994 @default.
- W4224256576 cites W2045463704 @default.
- W4224256576 cites W2047567126 @default.
- W4224256576 cites W2054620347 @default.
- W4224256576 cites W2055859870 @default.
- W4224256576 cites W2060967087 @default.
- W4224256576 cites W2062491474 @default.
- W4224256576 cites W2064942736 @default.
- W4224256576 cites W2065005416 @default.
- W4224256576 cites W2069240891 @default.
- W4224256576 cites W2075566610 @default.
- W4224256576 cites W2075796100 @default.
- W4224256576 cites W2076085026 @default.
- W4224256576 cites W2083924291 @default.
- W4224256576 cites W2085390763 @default.
- W4224256576 cites W2086884322 @default.
- W4224256576 cites W2087984403 @default.
- W4224256576 cites W2092301511 @default.
- W4224256576 cites W2094778701 @default.
- W4224256576 cites W2100025550 @default.
- W4224256576 cites W2103151937 @default.
- W4224256576 cites W2104252200 @default.
- W4224256576 cites W2105546352 @default.
- W4224256576 cites W2108056426 @default.
- W4224256576 cites W2108641227 @default.
- W4224256576 cites W2114203981 @default.
- W4224256576 cites W2114739764 @default.
- W4224256576 cites W2116346512 @default.
- W4224256576 cites W2119022285 @default.
- W4224256576 cites W2120660842 @default.
- W4224256576 cites W2120794222 @default.
- W4224256576 cites W2121039138 @default.
- W4224256576 cites W2121358343 @default.
- W4224256576 cites W2122639532 @default.
- W4224256576 cites W2123611991 @default.
- W4224256576 cites W2123975486 @default.
- W4224256576 cites W2127568053 @default.
- W4224256576 cites W2128463933 @default.
- W4224256576 cites W2128538491 @default.
- W4224256576 cites W2129035535 @default.
- W4224256576 cites W2130906129 @default.
- W4224256576 cites W2137608877 @default.
- W4224256576 cites W2138522501 @default.
- W4224256576 cites W2139279112 @default.
- W4224256576 cites W2139696801 @default.
- W4224256576 cites W2143930458 @default.
- W4224256576 cites W2153667584 @default.
- W4224256576 cites W2155400524 @default.
- W4224256576 cites W2156113654 @default.
- W4224256576 cites W2159840852 @default.
- W4224256576 cites W2161123384 @default.
- W4224256576 cites W2167056863 @default.
- W4224256576 cites W2172153902 @default.
- W4224256576 cites W2279493425 @default.
- W4224256576 cites W2299224923 @default.
- W4224256576 cites W2313685891 @default.
- W4224256576 cites W2315292953 @default.
- W4224256576 cites W2317139889 @default.
- W4224256576 cites W2322958722 @default.
- W4224256576 cites W2326076458 @default.
- W4224256576 cites W2328490745 @default.
- W4224256576 cites W2398117818 @default.