... trondhjemite of Rio Brazos, New Mexico, the interlayered quartzofeldspathic and metabasaltic metavolcanic Twilight Gneiss of the West Needle Mountains, Colorado, the syntectonic Pitts Meadow Granodiorite of the Black Canyon of the Gunnison River, Colorado, and the late syntectonic to posttectonic Kroenke...

... plutons at ca. 1,680 Ma (e.g., Kroenke Granodiorite, granite of Fairview Peak, and syenite of Mount Yale). The timing of deformation can be constrained to sometime after intrusion of the diorite of Denny Creek and likely before the emplacement of the undeformed granite of Fairview Peak. Geochemistry...

... (mm/yr) over past 10 m.y. (arrows) are from Lithgow-Bertelloni and Richards (1998, Fig. 2A) . On Indian-Australian plate, pattern of sea-floor spreading east of Australia is from Gaina et al. (1999) ; pattern in South Fiji region (34–27 Ma) (dotted) is from Yan and Kroenke (1993) ; pattern in south...

... still suggest a change at 3.5 Ma ( Wessel and Kroenke, 2000 ). Therefore, a third prediction is that an increase in extensional displacement rates must be accommodated by a decrease in rates of extension or an increase in rates of shortening somewhere in the vicinity of the Sierra Nevada...

... core complexes distributed along the Australian-Woodlark plate boundary ( Davies, 1980a , b ; Davies and Warren, 1988 ; Worthing, 1988 ; Hill and Baldwin, 1993 ; Little et al., 2007 ; Appleby, 1996 ; Peters, 2007 ). Footwall blueschist, eclogite, migmatite, gneiss, and Pliocene granodiorite...

... as they approach the collision zone but none crosses it. Collisional granites and granodiorites with K-Ar ages from 46 to 53 Ma are exposed in the axial part of the collision belt (Iona Island) [ 4 ]. Further to the south, the belt gives way to the Sakhalin suture that is traceable along the Northern Sakhalin...

... the 1.71-Ga Crampton Mountain and Twin Mountain batholiths, the 1.69-Ga Pitts Meadow pluton, and the 1.67-Ga Kroenke granodiorite ( Wobus et al., 1985 ; Bickford et al., 1969 ; Hallett, 1990 ; Reed et al., 1993 ). Although less silicic members include diorite and quartz diorite, significant parts...

... to Mineralogy and Petrology 141 , 643 – 658 . Nagel T.J. Hoffmann J.E. Münker C. ( 2011 ) Generation of Eoarchean tonalite-trondhjemite-granodiorite series from thickened mafic arc crust . Geochimica et Cosmochimica Acta 40 , 375 – 378 . Neal C.R. Mahoney J.J. Kroenke...

... the Denny Creek granodiorite and Kroenke granodiorite, with ages of 1672±5 Ma and 1669±8 Ma, respectively ( Reed et al., 1993 , and references therein). The Denny Creek granodiorite is penetratively deformed and locally gneissic, but the Kroenke granodiorite is essentially undeformed. Thus, these two cross...

... in the Paleoproterozoic. The granitoids are dominated by 170 to 150 Ma crustal-melt monzogranites and 130 to 126 Ma porphyritic granodiorites derived from under-plated basalt ( Wang et al., 1998 ; Li et al., 2003 ). Both are cut by widespread mafic to intermediate dikes and gold-bearing quartz veins. More than 95...

... at the fracture zones (Figs 2 and 4) also contributes to this effect; when subduction stopped 4 Ma ago, the ocean floor ages at 100 km depth be- neath the South Shetland trench were 17, 24 and 30 Ma (from SW to NE), which makes a 9.5 Ma age for a granodiorite from Cornwallis I. (Rex & Baker 1973; Fig. 7...

... are geochemically similar to those of the Kaminiskag assemblage (Figs.  5 and 8 ) and are commonly found in association with rare felsic volcanic flows that are geochemically similar to Archean tonalite– trondhjemite–granodiorite. Hollings et al. ( 1999 ) have suggested that contamination of the tholeiitic melts...

... a discrete crustal block. Widespread metaluminous granitoids dated by the zircon U-Pb method as middle to late Paleozoic show that convergence-related magmatism dominated the early evolution of this margin. Dates for granodiorites, monzogranites, and granites from the Ruppert and Hobbs coasts of western...

... , J. , 1995 , Oxygen isotope heterogeneity of the mantle deduced from global 18 O systematics of basalts from different geotectonic settings : Contributions to Mineralogy and Petrology , v. 120 p. 95 – 114 . Hilde , T.W.C. , Uyeda , S. , and Kroenke , L. , 1977 , Evolution...

... (zircon U-Pb; 240), diorite porphyrite and felsite dike (zircon U-Pb; 162 ± 1) Banlashan Mo 44°03 N, 120°07 E P Mo (1.1) Mo: 0.065% Granodiorite porphyry (zircon U-Pb; 133.5 ± 1.7) Re-Os (136.1 ± 6.6) Weilasituo Ag-Cu 44°03 N, 117°29 E Hv Ag: 155–504 g/t, Cu: 0.11–2.02% Biotite...

... levels since the Triassic Science 1987 235 1156 1167 Herz N. Timing of spreading in the South Atlantic: information from the Brazilian alkalic rocks Geological Society of America Bulletin 1977 88 101 112 Hilde T. W. C. Uyeda S. Kroenke L. Evolution...

... abundances in mantle rocks for extraction of picrite and komatiite melts Nature 1990 343 551 553 Martin Petrogenesis of Archaean trondhjemites, tonalites and granodiorites from eastern Finland: major and trace element geochemistry Journal of Petrology 1987 28 921 953 McCall...

... ). The middle Miocene history is more uncertain. Did 17–12 Ma mineralised granodiorites and Miocene volcanics on the mainland (unit 11, Fig. 2A ) form in a continental margin Maramuni Arc? If so, middle Miocene subduction was to the south, either part of a long-term southwards subduction and changing westwards...

... crust from Hf isotope systematics of Archean detrital zircons Geochimical Cosmochimica Acta 1990 54 1683 1697 Storey M. Mahoney J. J. Kroenke L. W. Saunders A. D. Are oceanic plateaus sites of komatiite formation? Geology 1991 19 376 379 Sudo A. Tatsumi Y...