Author: Harald Drewes
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 24
Book Description
Recent work provides the basis for establishing a stratigraphic column in the Santa Rita Mountains of Santa Cruz and Pima Counties of southeastern Arizona. Thirteen formations of this column are here defined and one is revised. One new formation is a Precambrian granodiorite. Ten new formations are Mesozoic units that include plutonic, volcanic, and continental sedimentary rocks. The revised formation is the Upper Cretaceous Fort Crittenden Formation of Stoyanow (1949), dominantly a sedimentary unit. Two new formations are volcanic and sedimentary rocks of Tertiary age. Many radiometric dates supplement the sparse fossil record in corroborating or redefining the ages that had been assigned to many units on the basis of their geologic relations and in establishing the ages of other units.
New and Revised Stratigraphic Names in the Santa Rita Mountains of Southeastern Arizona
Author: Harald Drewes
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 24
Book Description
Recent work provides the basis for establishing a stratigraphic column in the Santa Rita Mountains of Santa Cruz and Pima Counties of southeastern Arizona. Thirteen formations of this column are here defined and one is revised. One new formation is a Precambrian granodiorite. Ten new formations are Mesozoic units that include plutonic, volcanic, and continental sedimentary rocks. The revised formation is the Upper Cretaceous Fort Crittenden Formation of Stoyanow (1949), dominantly a sedimentary unit. Two new formations are volcanic and sedimentary rocks of Tertiary age. Many radiometric dates supplement the sparse fossil record in corroborating or redefining the ages that had been assigned to many units on the basis of their geologic relations and in establishing the ages of other units.
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 24
Book Description
Recent work provides the basis for establishing a stratigraphic column in the Santa Rita Mountains of Santa Cruz and Pima Counties of southeastern Arizona. Thirteen formations of this column are here defined and one is revised. One new formation is a Precambrian granodiorite. Ten new formations are Mesozoic units that include plutonic, volcanic, and continental sedimentary rocks. The revised formation is the Upper Cretaceous Fort Crittenden Formation of Stoyanow (1949), dominantly a sedimentary unit. Two new formations are volcanic and sedimentary rocks of Tertiary age. Many radiometric dates supplement the sparse fossil record in corroborating or redefining the ages that had been assigned to many units on the basis of their geologic relations and in establishing the ages of other units.
New and revised stratigraphic names in the Santa Rita Mountains of southeastern Arizona
New and Revised Stratigraphic Names in the Santa Rita Mountains of Southeastern Arizona - Contributions to Stratigraphy
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
Contributions to stratigraphy
Contributions to Stratigraphy
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
NEW AND REVISED STRATIGRAPHIC NAMES IN THE SANTA RITA MOUNTAINS OF SOUTHEASTERN ARIZONA.
Author: United States. Department of the Interior
Publisher:
ISBN:
Category :
Languages : en
Pages : 39
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 39
Book Description
Mesozoic Stratigraphy of the Santa Rita Mountains, Southeast of Tucson, Arizona
Author: Harald Drewes
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 92
Book Description
Additional title page description: A description of seven thick sequences of volcanic and sedimentary rocks and an interpretation of the sporadically active continental environments in which they were deposited.
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 92
Book Description
Additional title page description: A description of seven thick sequences of volcanic and sedimentary rocks and an interpretation of the sporadically active continental environments in which they were deposited.
Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1968
Author: George Vincent Cohee
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 390
Book Description
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 390
Book Description
Geological Survey Bulletin
Geochemical Prospecting Using Water from Small Streams in Central South Carolina
Author: Henry Bell
Publisher:
ISBN:
Category : Geochemical prospecting
Languages : en
Pages : 216
Book Description
Water from 69 small streams in the Carolina slate belt was sampled and tested for specific conductance, hardness, pH, and iron and chloride content."
Publisher:
ISBN:
Category : Geochemical prospecting
Languages : en
Pages : 216
Book Description
Water from 69 small streams in the Carolina slate belt was sampled and tested for specific conductance, hardness, pH, and iron and chloride content."