We have developed a new quantitative method to estimate paleohorizontal in granitic plutons using the aluminum-in-hornblende (AH) barometer. The method is used to correct previously published paleomagnetic data from the 93–96 Ma Mount Stuart batholith of the Cascades Mountains, Washington State, for the effects of postemplacement tilting. AH barometry was done on 46 samples from the batholith u...

Previously undated low-grade metamorphic rocks from the Puerto Cisnes-Queulat area (44°30’ S) contain detrital zircons of mid-Oligocene age (ca. 28 Ma). Their outcrops represent easternmost occurrence late Oligocene to early Miocene marine volcano-sedimentary Traiguén Formation; previous correlation with Paleozoic basement this sector North Patagonian Andes is thus refuted. A similar and proven...

Abstract Recent observations and geophysical studies at the Vredefort impact structure have indicated that melt dikes in central uplift of small depth extents. In this study, we performed magnetic electrical resistivity tomography (ERT) surveys Lesutoskraal granophyre dike (LGD) trenched to confirm its extent. The ERT survey showed outcrops LGD are associated with shallow resistive zones <3 ...