New article: Post-Laramide Extension and Erosion in the Madison and Gallatin Ranges of Southwest Montana from Apatite (U-Th-Sm)/He Thermochronometry #Geology #EarthScience #Tectonics #Geomorphology #Lithosphere #MontanaGeology tinyurl.com/yzr2ccac

Photograph of fossilized mudcracks forming a fairly dense reticulated pattern across the frame. The stone is light gray but light orange in places, while the fossil cracks appear as a darker brown.

#RockinTuesday fossil mudcracks, Precambrian Belt Supergroup, northwest Montana
#geology #inlandnorthwest #precambrian #montana #montanageology