Eight anorthositic and gabbroic intrusives were chosen to represent both the temporal and spatial ranges of plutonic activity that formed the Duluth Complex and related mafic intrusions. U-Pb isotopic analyses from zircons and baddeleyites result in U-Pb concordant ages with little or no ambiguity...
Well, the British LIbrary’s blog illustrates this point with a medieval painting of Mary handing off the baby Jesus to an angel (“Here, you, do something useful and hold the kid”) so she can sit on the devil and do a spot of wrestling. While wearing a pristine, floor-length skirt...
Duluth Complexmafic intrusionMinnesotageochronologicalpetrogeneticpaleomagneticPrecise resolution of the timing of igneous activity is crucial to understanding the dynamic processes associated with continental rifting. Mafic intrusive rocks constitute a major portion of the exposed 1100 Ma (Keweenawan) Midcontinent...
Duluth ComplexThe accuracy and validation of geo‐ and thermochronological dating hinges on the availability of well‐characterised age reference materials. The Mesoproterozoic gabbroic anorthosite FC1 from the Duluth Complex, Minnesota is a reference material for zircon U‐Pb and a suggested reference ...
Grew, Director, provided editorial and cartographic assistance and undertook preparation of the camera-ready copy. Individuals from the Geological Survey of Canada, the U.S. Geological Survey, the University of Minnesota, Duluth, and Southern Illinois University also contributed their time toward the ...