... class of granite and felsite, and quartzite. The general composition of the classes can be determined from comparisons of the TIMS spectra with laboratory spectra. Carbonatite rocks are not classified, and we attribute that to the fact that dolomite, the predominant carbonate mineral in the complex, has...

...) for domains that have not lost Pb. The TIMS analyses of TCB are tightly clustered and give a concordia age of 1018.1 ± 1.7 Ma (2σ, n = 4, MSWD = 0.92). Raman and PL spectra show a low to moderate degree of accumulated radiation-induced damage in the Grenville Skarn Titanite crystals and uniform internal...

...Kenneth Watson; Fred A. Kruse; Susanne Hummer-Miller Abstract Experimental Thermal Infrared Multispectral Scanner (TIMS) aircraft data have been acquired for the Rodeo Creek NE 7 1/2 minute quadrangle, Eureka County, northern Nevada, covering the Carlin gold mine. A simple model has been developed...

... minerals. This feature allows identification of quartzite and discrimination of other silicate rocks in images produced from the TIMS data. Spectral features of other minerals, such as the nearly equal 11.3 mu m band of carbonates, are also detectable in laboratory spectra and field spectra. Using the day...

... and early evolution of the San Andreas fault system. Detrital zircon laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) age spectra indicate a change in sedimentary provenance between the marine Claremont formation (Monterey Group) and the terrestrial Orinda and Moraga Formations...

... is made up by a sedimentary basin. The Bergslagen area shows a metamorphic zonation from lower to middle amphibolite facies in the north to upper amphibolite facies and locally granulite facies in the south; a small greenschist area exists in the west. Identifying the age spectra of inherited components...

... spectra [five of which have the same mean value as the published Isotope Dilution Thermal Ionization Mass Spectrometry (ID-TIMS) age from the same sample]; and (2) 14 samples yielding multiple age components. Age patterns from both groups suggest that the previously separated ~143 Ma Repulse Bay (RBVG...

... detrital zircon U–Pb LA-ICP-MS data from six Mesoproterozoic to Carboniferous samples and one U–Pb TIMS zircon age from an orthogneiss from Oscar II Land in order to discuss tectonic models for this region. Variable proportions of Palaeo- to Neoproterozoic detritus dominate the metasedimentary samples...

...Figure 4. Summary of primary magmatic U-Pb zircon chemical abrasion–isotope dilution–thermal ionization mass spectrometry (CA-ID-TIMS) age spectra ( Samperton et al., 2015 ), Ti-in-zircon thermometric data, MELTS (see text) zircon crystallization models, and zircon diffusive growth modeling...

...Tim G. St. Pierre; Balwant Singh; John Webb; Bob Gilkes GeoRef, Copyright 2004, American Geological Institute. 1992 ...

... gravel (E2); D, marly limestone from Alcova Formation (B6); and E, bentonite from Clay Spur Bentonite (F9). These spectra confirm spectral interpretation of Figure 9 TIMS image. For example, lower emissivity of quartz (spectrum C) in TIMS bands 1 and 3 (blue and green, respectively, in TIMS image...

... are certainly relevant for ancient zircon, or for some TIMS dates due to the larger crystal volume sampled using TIMS as compared to LA-ICP-MS or SIMS (e.g., Schaltegger et al., 2015 ). Furthermore, smoking-gun evidence against zircon age spectra being simply caused by unrecognized Pb-loss or inheritance comes...