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Issues

ISSN 0091-7613
EISSN 1943-2682
In this Issue

Articles

Geology February 06, 2020, Vol.48, 419-424. doi:https://doi.org/10.1130/G47008.1
Geology February 14, 2020, Vol.48, 425-430. doi:https://doi.org/10.1130/G46755.1
Geology February 06, 2020, Vol.48, 431-435. doi:https://doi.org/10.1130/G47045.1
Geology February 14, 2020, Vol.48, 436-440. doi:https://doi.org/10.1130/G47331.1
Geology February 14, 2020, Vol.48, 441-445. doi:https://doi.org/10.1130/G46913.1
Geology February 14, 2020, Vol.48, 446-451. doi:https://doi.org/10.1130/G46991.1
Geology February 06, 2020, Vol.48, 452-456. doi:https://doi.org/10.1130/G46831.1
Geology February 06, 2020, Vol.48, 457-461. doi:https://doi.org/10.1130/G47076.1
Geology February 14, 2020, Vol.48, 462-467. doi:https://doi.org/10.1130/G46756.1
Geology February 14, 2020, Vol.48, 468-472. doi:https://doi.org/10.1130/G46909.1
Geology February 27, 2020, Vol.48, 473-477. doi:https://doi.org/10.1130/G47221.1
Geology February 27, 2020, Vol.48, 478-482. doi:https://doi.org/10.1130/G47001.1
Geology March 18, 2020, Vol.48, 483-487. doi:https://doi.org/10.1130/G47023.1
Geology February 27, 2020, Vol.48, 488-492. doi:https://doi.org/10.1130/G47417.1
Geology February 27, 2020, Vol.48, 493-498. doi:https://doi.org/10.1130/G47154.1
Geology March 04, 2020, Vol.48, 499-503. doi:https://doi.org/10.1130/G47113.1
Geology February 27, 2020, Vol.48, 504-508. doi:https://doi.org/10.1130/G47422.1
Geology February 27, 2020, Vol.48, 509-513. doi:https://doi.org/10.1130/G47197.1
Geology March 18, 2020, Vol.48, 514-518. doi:https://doi.org/10.1130/G46965.1
Geology February 27, 2020, Vol.48, 519-524. doi:https://doi.org/10.1130/G47169.1

Research Focus

Geology May 01, 2020, Vol.48, 525-526. doi:https://doi.org/10.1130/focus052020.1

Forum

Geology May 01, 2020, Vol.48, e501. doi:https://doi.org/10.1130/G47444C.1
Geology May 01, 2020, Vol.48, e502. doi:https://doi.org/10.1130/G47542Y.1
  • Cover Image

    Cover Image

    issue cover

    COVER: Cambrian Tonto Group exposed near Palisades Canyon in eastern Grand Canyon, USA. Thumbnail image here shows units exposed: PCd—lower Dox Formation of the Mesoproterozoic Unkar Group; Cambrian Tonto Group consists of: Ct—Tapeats Sandstone, Cb—Bright Angel Formation, Cm—Muav Formation, and Cfm—Frenchman Mountain Dolostone (Sixtymile Formation is missing here); DTb—Devonian Temple Butte Formation, Mr—Mississippian Redwall Limestone. Next red cliffs are the Pennsylvanian/Permian Supai Group; the rim of Grand Canyon is the Permian Aubrey Group.

    Photo by: Laura J. Crossey

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