...Shannon M. Johns; Herwart H. Helmstaedt; T. Kurtis Kyser Abstract Rocks of the Bravo Lake Formation on Turtle Back Island and Pillow Island off the western coast of central Baffin Island, Nunavut, represent a well-exposed example of the mafic volcanic and intrusive sequences commonly preserved near...

...Figure 13. Extended primitive mantle–normalized element plots for the three dated intrusive samples. Normalizing values are from Sun and McDonough (1989) . (A) Upper Bravo Lake trachyte dike sample C323. Also shown for comparison are the fields for type 2a (88 samples; excluding outlier sample...

... of these two bands to Mg/Fe contents. In this work, Raman spectra of 93 olivine samples were acquired on either Bruker's 532 nm (laser wavelength) Senterra or BRAVO (785/852.3 nm) spectrometer. This paper compares the two-peak band shift univariate method with two multivariate methods: partial least squares...

... that they are intrusive and originated by the fluidization and injection of sand during burial. From seismic and borehole data, it is unclear whether the sand that was injected to form the Maule reservoir was derived from depositional Eocene sandstones or from the underlying Forties Sandstone Member. These two...

...Daniela Gerovska; Marcos J. Araúzo-Bravo; Kathryn Whaler; Petar Stavrev; Alan Reid Abstract We present an automatic procedure for interpretation of magnetic or gravity gridded anomalies based on the finite-difference similarity transform (FDST). It is called MaGSoundFDST (magnetic and gravity...

... water remain uncertain due to indirectly determined ages of the CO 2 influx. The proposed ages for the Bravo Dome gas field in New Mexico, USA, vary from 56 ka to 1.5 Ma. Here we demonstrate that residence times can be estimated from simple modeling of noble gas and stable isotope diffusion profiles...

... in the southern Superior Province (Figure  1 ). The Canadian Malartic deposit is hosted mainly in the sedimentary rocks of the Pontiac Group, which are cut by various felsic to intermediate intrusions. The Pontiac Group is bounded to the north by mafic to ultramafic volcanic rocks of the Piché Group ( Pilote et...

...Michael R. Hudec; Tim P. Dooley; Frank J. Peel; Juan I. Soto Abstract Passive-margin salt basins tend to be much more deformed than their nonsalt equivalents, but they are by no means all the same. We used seismic data to study the Salina del Bravo region, northeast Mexico, to investigate the ways...

...). We have studied the N120° Rio Bravo fault zone probably inherited from the Jurassic opening of the gulf of Mexico. This fault zone is located along the international boundary between United States and Mexico. We demonstrate that it was active mainly during the Oligocene. In the Ojinaga area...

... to Pasquarè et al. (1991) . In the southern part of the Valle de Bravo region (near El Peñon, Fig. 3 ), there are several granitic intrusive bodies. The extent and ages of these are not known, but they are undeformed and therefore younger than the late Mesozoic–earliest Cenozoic Laramide Orogeny...

...Daniela Gerovska; Marcos J. Araúzo-Bravo; Petar Stavrev; Kathryn Whaler Abstract We present an automatic procedure — Magnetic And Gravity SOUNDing Differential Similarity Transform (MaGSoundDST) — for inversion of regular or irregular magnetic- and gravity-grid data measured on even or uneven...

... of the Permian beds over ancient mountains composed of crystalline rocks, while T. S. Harrison 3 favored the theory of igneous intrusions in the form of sills or lacoliths. In the log of the Amarillo Oil Company’s No. 1 Masterson, the first well drilled on the John Ray dome, mention is made of “granite...

... Mirsky 1969 ). BH, Bravo Hills; BHSZ, Bravo Hills shear zone; CS, Cape Surprise; DM, Duncan Mountains; GH, Gabbro Hills; LR, Lubbock Ridge; MGSZ, Mt. Greenlee shear zone; MH, Mt. Henson; NPSZ, Nilsen Peak shear zone; PP, Polaris Peak; SN, Sage Nunataks; SSZ, Spillway shear zone; TN, Taylor Nunatak; T...

...Agustina I. Lencina; Mariana N. Soria; Fernando J. Gomez; Emmanuelle Gérard; M. Eugenia Farias ABSTRACT Pozo Bravo is a high-altitude Andean lake that harbors modern microbialites thriving in hypersaline conditions in the Salar de Antofalla, one of the driest sites on Earth and located in the Puna...

... in the southern Eastern Andean Metamorphic Complex. Total gas ages reflect contact metamorphic ages for metapelites close to intrusions in the northern and southern Eastern Andean Metamorphic Complex and in the Chonos Metamorphic Complex. The thermal overprinting of metapelites occurred in Early Cretaceous times...

... 45 Marriner G. F. Millward D. The petrology and geochemistry of Cretaceous to Recent volcanism in Colombia in the magmatic history of an accretionary plate margin J. geol. Soc. London 1984 141 473 86 Millward D. The vijes felsites: tectonically controlled intrusions...