Along the western margin of the Taconic orogen in New York and Vermont, undeformed quartz-calcite veins commonly occur in the belt of melange that formed beneath the westward-advancing Taconic Allochthon during the Middle-Late Ordovician Taconic orogeny. The veins have mineral slickenfibers recording either reverse or normal slip. In New York, the reverse-motion veins recording the latest phase...

Shallow dike intrusion and widening was proposed several decades ago as a cause of surface faulting and graben formation on Earth. This hypothesis was subsequently applied to the spectacular linear and/or radial graben systems visible on Mars. However, a recent study has suggested that shallow dike intrusion on Mars results in contractional folding and uplift adjacent to dike walls rather than ...

Based on the interpretation of 2D seismic profiles integrated with surface geological investigations, a mechanism responsible for formation large scale normal fault zone has been proposed. The fault, here referred to as Rycerka Fault, predominantly dip-slip component detachment located at base Carpathian units. developed due an anticlinal stack within Dukla Unit overlain by Magura Units. Stacki...

[1] Topographic profiles across a lobate fault scarp on Mercury have been used to constrain the depth of faulting to 30–40 km. Here we use this depth to place constraints on the crustal thickness and heat flow into the base of the crust. With no crustal heat production, the mantle heat flux on Mercury at the time of scarp formation was 30–50 mWm . However, higher crustal heat production rates a...

Goff comments that faulting is important for creation of abyssal hills and is the dominant process at slow-spreading ridges. We respond that faulting is indeed important but cannot alone explain the bathymetric signal predicted by our models and observed at the Australian-Antarctic Ridge. We show that for intermediate- to fast-spreading ridges, abyssal hill spacing is consistent with the period...

ConUtriuUing subject-maner experts and reviewers Included: Bill Arnold PA SZ flow issues Scott Bennett WPD Waste package and design-related FEPs Jim Houseworth UZ UZ flow issues and fracture-related FEPs Dwayne Kicker Repository Modeling Rockfall-related FEPs Dennis O'Leary USGS Faulting-related and tectonic-related FEPs Carl Stepp Site Integration Tectonic-related, faulting-related, and seismi...

Between the compressional structures of the Green Mountains of Vermont and the dome-like Adirondack mass lie the Lake Champlain lowlands characterized by normal faults, moderate dips, and a scarcity of folds. The normal faults belong mainly to two systems, one having a northeast-southwest strike and one a north-south strike. It appears that both systems were formed simultaneously, and structura...