Robert D. Jacobi
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View article: Deep borehole discoveries beneath the Appalachian Basin: Broad Rodinian rift and Neoproterozoic tectonothermal event
Deep borehole discoveries beneath the Appalachian Basin: Broad Rodinian rift and Neoproterozoic tectonothermal event Open
Besides a few isolated rift basins along the Neoproterozoic eastern Laurentian margin, the Appalachian Palaeozoic strata rest unconformably on Mesoproterozoic crystalline basement, reflecting a ca. 550+ Ma hiatus. However, a nearly 3 km de…
View article: Seismotectonic implications of the Berne earthquake swarms west-southwest of Albany, New York
Seismotectonic implications of the Berne earthquake swarms west-southwest of Albany, New York Open
Five earthquake swarms occurred from 2007 to 2011 near Berne, New York. Each swarm consisted of four to twenty-four earthquakes ranging from M 1.0 to M 3.1. The network determinations of the focal depths ranged from 6 km to 24 km, 77% of w…
View article: Aseismic ridge subduction as a driver for the Ordovician Taconic orogeny and Utica foreland basin in New England and New York State
Aseismic ridge subduction as a driver for the Ordovician Taconic orogeny and Utica foreland basin in New England and New York State Open
Aseismic ridge subduction is common along modern convergent margins. We enumerate six criteria that can be used to recognize aseismic ridge subduction in orogens, including a magmatic gap with uplift followed by bimodal volcanism, which co…
View article: RIDGE SUBDUCTION INCORPORATED INTO TECTONIC MODELS OF THE TACONIC OROGENY AND ITS BEARING ON THE ORDOVICIAN UTICA FORELAND BASIN OF NEW YORK STATE
RIDGE SUBDUCTION INCORPORATED INTO TECTONIC MODELS OF THE TACONIC OROGENY AND ITS BEARING ON THE ORDOVICIAN UTICA FORELAND BASIN OF NEW YORK STATE Open
Subduction of seismic and aseismic oceanic ridges is common in contracting ocean basins, and closure of main ocean basins generally involve subduction of a seismic ridge (spreading center).Ridge subduction can result in flat slab subductio…