AAPG Bulletin Volume 109, Number 9  September 2025

SPECIAL ISSUE: GEOTHERMAL EXPLORATION EDITED BY KELLEN L. GUNDERSON AND EVAN J . EARNEST

Introduction to the special issue on geothermal energyOpen Access

Kellen L. Gunderson; Evan J. Earnest

AAPG Bulletin (2025) 109 (9): 1143–1145.

https://doi.org/10.1306/bltnintro080525

Rethinking power density for geothermal resource estimation Available to Purchase

R. Chadwick Holmes; Laura Huebner

AAPG Bulletin (2025) 109 (9): 1147–1159.

https://doi.org/10.1306/01142524055

Preliminary resource conceptual model and power capacity estimates for the Northern Granite Springs Valley blind geothermal prospect, Pershing County, Nevada Available to Purchase

Kurt O. Kraal; Bridget F. Ayling; Nicole Hart-Wagoner; James E. Faulds; Jonathan M. G. Glen; Drew L. Siler; Tait Earney

AAPG Bulletin (2025) 109 (9): 1161–1181.

https://doi.org/10.1306/07092524067

Detailed reservoir characterization of Mesozoic siliciclastic strata for sedimentary geothermal exploration, Colorado Plateau to Basin and Range transition zone, Utah Available to Purchase

Ted Morgan; Samuel M. Hudson; Kellen L. Gunderson; Brad Taylor; Cassidy Grover; Levi DeCrescenzo; Derek Ashliman; Madison Ramos

AAPG Bulletin (2025) 109 (9): 1183–1199.

https://doi.org/10.1306/07092524092

An integrated geothermal resource assessment and techno-economic analysis in Presidio County of the Trans-Pecos region of Texas Available to Purchase

Shuvajit Bhattacharya; Ken Wisian; Bissett Young; Malcolm Ross; Mohamed Khaled; Rama Chandrudu Arasada; Qiqi Wang; David Chapman; Aysegul Turan

AAPG Bulletin (2025) 109 (9): 1201–1230.

https://doi.org/10.1306/07092524128