G.C. Herman's Earth-Science Blogs

2022-06-12 image icon Punctuated Tectonic Equilibrium

2022-05-19 image icon Passive drift, wrinkling crust, and cracking plutons of the New York Recess, USA

2022-05-12 image icon The Vredefort astrobleme, mantle plumes, core pipes, and tectonic-plate drift

 2022-05-19 image icon Aspects of a Nasca Hillside Ceremony Site used for 'Moche Toss'

2022-05-19 image icon Three, suspected, large-bolide impacts in the South American region with estimated ages of 16 Ma, 24 Ma, and 124 Ma.

2021-10-10 image icon Earth's mantle as an electromagnetic-field component, with implications for geomagnetic reversals

2021-07-26 image icon 2020-2021 Impact experiments using and an air pistol, steel projectile, and 60mm glass balls

2021-06-24 image icon One bad period on Earth about 800,000 B.P.

2021-05-25 image icon Structural traces and tectonic aspects of 13 Martian astroblemes

2021-02-09 image icon Return to Devil's Gate

2021-01-16 image icon Some physical aspects of the Giza pyramids: Old-Kingdom Science and Engineering

2020-11-03 image icon 877MB mp4 Geological Society of America 14-minute Nazca-Line video 

2020-10-29 image icon The hydrogeological and tectonic nature of the Nazca Lines

2020-07-12 image icon Old Pacific mayhem; three suspected bolide-impact events of Cretaceous age with global consequences

2020-02-15 image icon Mid-Cenozoic tectonic disruption of the Central Appalachians by the Chesapeake Invader

2020-02-12 image icon Impact Tectonics; beyond the Craters

2019-09-11 image icon A 3D SketchUp and Google Earth Model of The Yellowstone Calderas and Farallon Plate

2014-03-05 image icon Earth Continental Geology by Era and Sea-Floor physiography for Google Earth

2010-07-29 image icon Far-Field Bolide-Impact Strains on Earth

2008-08-25 image icon 2 Known and 6 Suspected Large-Bolide Impacts on Earth and Tectonic-Plate Drift

2007-11-05 image icon Plate splitting impact in the Congo Basin, bedrock geology, plate motions, and diamonds