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Showing 1 to 1 of 1 for “"U-Pb monazite dating"”.
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Proterozoic history of the Idaho Springs-Ralston shear zone: evidence for a widespread ca. 1.4 Ga orogenic event in central Colorado, The
… limb of the NE-plunging, NW-dipping F3 fold. U-Pb laser ablation inductively coupled mass spectrometry monazite dates revealed ~1.68 Ga and ~1.43 Ga events, both within and adjacent to the IRSZ. Relationships between microstructures and monazite grains suggest F1 folds formed at ~1.68 Ga and F2 …