Guilherme Ferreira da Silva

3 Questions 9 Answers 0 Followers

Questions related from Guilherme Ferreira da Silva

Why the potassium channel (K%) of Airborne Gamma-ray surveys in the Amazonia is so noisy?

I am currently working with airborne gamma-ray surveys of Brazilian Amazon region. With the same array of surveying, the same kind of detector, aicraft, etc... the data from Potassium channel of...

23 February 2018 3,785 10 View

What kind of mineral assemblage would attest granulitic facies in a rock of "carbonate-greywacke-like" protolith?

In simple calcissilicated rocks, the granulitic facies would be attested by the presence of forsterite or grossular, up to fCO2 quantity. Anyhow, the coexistence of Diopside and Enstatite in a...

25 October 2016 1,396 7 View

Is it possible to distinguish between "ortho" and "para-amphibolite" using the mineral chemistry composition of amphibole?

Would we expect any difference on the composition of a metamorphic hornblende derived from a calcissilicated rock instead of a mafic/ultramafic rock? Can it be determined using EPMA method? What...

16 October 2016 464 4 View