The evolution of intra- and inter-molecular isotope equilibria in natural gases with thermal maturation

Autor: Xavier Mangenot, Camilo Ponton, Jianzhang Liu, Fuyun Cong, Michael J. Formolo, Yanhua Shuai, John M. Eiler, Michael Lawson, Hao Xie, Guannan Dong

Publikováno v: Geochimica et Cosmochimica Acta. 307:22-41

Naturally occurring hydrocarbon fluids in sedimentary basins have economic, geological and environmental significance. Connecting sedimentary basin temperature-time evolution with petroleum generation and transformation is a long-studied problem. In

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27633cf91628cdc03dc9e8acfd8c4672
https://doi.org/10.1016/j.gca.2021.05.012

Position-specific distribution of hydrogen isotopes in natural propane: Effects of thermal cracking, equilibration and biodegradation

Autor: Alex L. Sessions, John M. Eiler, André L. D. Spigolon, Michael J. Formolo, Alexandre A. Ferreira, Hao Xie, Geoffrey S. Ellis, Erica Tavares de Morais, Michael Lawson, Camilo Ponton, Michael D. Lewan

Publikováno v: Geochimica et Cosmochimica Acta. 290:235-256

Intramolecular isotope distributions, including isotope clumping and position specific fractionation, can provide proxies for the formation temperature and formation and destruction pathways of molecules. In this study, we explore the position-specif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4808d74d5ca4d8b5be6518b2dbc4fc27
https://doi.org/10.1016/j.gca.2020.09.009

Precise Measurements of 12CH2D2 by Tunable Infrared Laser Direct Absorption Spectroscopy

Autor: Joanne H. Shorter, Colin M. Western, Shuhei Ono, David D. Nelson, J. Barry McManus, David T. Wang, Michael J. Formolo, Christoph Dyroff, Yenny González

Publikováno v: Gonzalez, Y, Nelson, D D, Shorter, J H, McManus, J B, Dyroff, C, Formolo, M, Wang, D T, Western, C M & Ono, S 2019, ' Precise Measurements of 12 CH 2 D 2 by Tunable Infrared Laser Direct Absorption Spectroscopy ', Analytical Chemistry, vol. 91, 23, pp. 14967-14974 . https://doi.org/10.1021/acs.analchem.9b03412

We present precise measurements of doubly deuterated methane (12CH2D2) in natural methane samples using tunable infrared laser direct absorption spectroscopy (TILDAS). Using a 413 m optical path length astigmatic Herriott cell and two quantum cascade

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b78be59cf5fbbb510e41b9e33b6541b4
https://doi.org/10.1021/acs.analchem.9b03412

EVALUATING SEDIMENTARY MERCURY CONCENTRATIONS ACROSS THE LATE DEVONIAN FRASNIAN-FAMMENIAN MASS EXTINCTION EVENT FROM THE MICHIGAN AND APPALACHIAN BASINS

Autor: Andrew H. Caruthers, Matthew A. LeRoy, William B. Harrison, Michael J Formolo, Theodore R. Them, Natascha Riedinger, Benjamin C. Gill, Corinne K. Luksch

Publikováno v: Geological Society of America Abstracts with Programs.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7549638f0e9176bb3199b9f4798bf626
https://doi.org/10.1130/abs/2021am-370500

Identifying thermogenic and microbial methane in deep water Gulf of Mexico Reservoirs

Autor: John M. Eiler, Michael J. Formolo, Camilo Ponton, Nivedita Thiagarajan, Michael Lawson, Nami Kitchen, Hao Xie

The Gulf of Mexico (GOM) produces 5% of total U.S. dry gas production ( USEIA, 2016 ). Despite this, the proportion of microbial and thermogenic methane in discovered and producing fields from this area is still not well understood. Understanding the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42702ba05021421cb6a48d35202ebf05
https://resolver.caltech.edu/CaltechAUTHORS:20200302-141642760