Continental rifts evolve along two possible paths. In one, a rift successfully evolves into
seafloor spreading, leaving the rift structures buried beneath thick sedimentary and volcanic …

Uncertainty exists in the configuration and extent of the Midcontinent Rift System (MRS)
because of deficiencies in geophysical data and limited information from outcrops and …

The late Mesoproterozoic was a time of large-scale tectonic activity both in the interior and
on the margins of Laurentia—most notably the development of the Midcontinent Rift and the …

We present initial results from three-dimensional inversion of long period EarthScope
magnetotelluric (MT) transportable array data from 232 sites covering the north-central US …

U-Pb baddeleyite ages for key mafic dykes of the Amazonian Craton reveal four significant
intraplate episodes that allow connections with global igneous activity through time and …

Rifts are segmented linear depressions that are filled with sedimentary and igneous rocks;
they form by extension and often evolve into plate boundaries. Flood basalts, a class of large …

The amalgamation of Laurentia's Archean provinces ca. 1830 Ma was followed by~ 700 my
of accretionary orogenesis along its active southeastern margin, marked by subduction of …

Abstract Paleomagnetism of the North American Midcontinent Rift provides a robust
paleogeographic record of Laurentia (cratonic North America) from ca. 1110 to 1070 Ma …

A crucial constraint on the evolution of the ca. 1100 Ma Midcontinent Rift (MCR) in North
America comes from the Jacobsville Sandstone, Bayfield Group, and other equivalent …

Recent Oklahoma seismicity shows a regional correlation with increased wastewater
injection activity, but local variations suggest that some areas are more likely to exhibit …