Tectonic history from vitrinite reflectance

Thermal considerations in inferring frictional heating from vitrinite reflectance and implications for shallow coseismic slip within the Nankai Subduction Zone

Frictional properties within the upper few kilometers of subduction zones are generally thought to inhibit rupture propagation. Understanding whether large rapid slip propagates to the surface during megathrust earthquakes is important for characterizing tsunami hazard. Recent vitrinite reflectance analysis by Sakaguchi et al. (2011) on cores from the NanTroSEIZE drilling transect at the Nankai...

DIFFUSE REFLECTANCE MEASUREMENTS FROM DIFFERENT SURFACES

Relative diffuse reflection measurements from the original and ground surfaces using a He-Ne laser are reported. The intensity measurements for the metallic, transparent dielectric, matte plastic surfaces and colored papers are presented. Our results indicate that among metallic surfaces tested, aluminum has the highest diffuse reflectance; while the original stainless steel surface shows the l...

Mantle structure and tectonic history of SE Asia

Unraveling Europa’s Tectonic History: Evidence for a finite obliquity?

Introduction: Cycloidal crack patterns on Europa are influenced by tidal stress [1]. A wellrecognized portion of the tidal stress is associated with Europa’s orbital eccentricity, which in turn is driven by the Laplace orbital resonance. Their shapes record the location of their formation, as well as the conditions for crack formation. Hoppa et al. modeled several cycloid chains [2]. Hurford et...

Sequence of tectonic deformation in the history of Venus: Evidence from global stratigraphic relationships

Analysis of local and regional stratigraphic relationships has permitted the assessment of the nature of tectonic structures and their distribution throughout the observed history of Venus, spanning the past several hundreds of millions of years. We find that shortening characteristic of intensely deformed tessera terrain gave way to widespread distributed fracturing and extension within the te...