The Samaniego Hills are a low series of hills composed of flat-lying to gentlydipping early Miocene and possibly late Oligocene lava flows interbedded with thin units of volcaniclastic and locally non-volcaniclastic sandstone and conglomerate. The preserved sequence is approximately 600 meters thick. The top is not preserved, but the base is well exposed along the southern edge of the hills, where it overlaps K-feldspar porphyritic granite of probable Middle Proterozoic age invaded by diabase dikes. The diabase occurs as vertical and subhorizontal dikes, and is probably associated with the Middle Proterozoic Apache Group, which overlies the granite sparingly along the southern edge of the map area. The granitic rocks form a broad piedmont s...
The purpose of this project is to integrate new detailed field mapping, aerial photograph interpreta...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The map area includes the Waterman Mountains and northern part of the Roskruge Mountains. These rang...
The Picacho Mountains are north-south trending mountain range completely surrounded by Quaternary al...
The Sierrita Mountains are a deeply eroded, ~1,000km2 Basin and Range uplift located 60km south of T...
The map area includes the Waterman Mountains and northern part of the Roskruge Mountains. These ran...
The Sawtooth Mountains are a small (45 km2 ), low-relief (250 m), yet rugged range composed of essen...
The area described in this study includes the western Gila Bend and the southern Eagletail mountains...
The area described in this study includes the central Gila Bend mountains, Maricopa county, Arizona....
This map details the bedrock geology, structural geology, surficial geology, geomorphology, and geol...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The southern Plomosa Mountains were the first range in west-central Arizona for which a published ge...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The study area includes the southern Roskruge Mountains and a small area of the northernmost Coyote ...
The purpose of this project is to integrate new detailed field mapping, aerial photograph interpreta...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The map area includes the Waterman Mountains and northern part of the Roskruge Mountains. These rang...
The Picacho Mountains are north-south trending mountain range completely surrounded by Quaternary al...
The Sierrita Mountains are a deeply eroded, ~1,000km2 Basin and Range uplift located 60km south of T...
The map area includes the Waterman Mountains and northern part of the Roskruge Mountains. These ran...
The Sawtooth Mountains are a small (45 km2 ), low-relief (250 m), yet rugged range composed of essen...
The area described in this study includes the western Gila Bend and the southern Eagletail mountains...
The area described in this study includes the central Gila Bend mountains, Maricopa county, Arizona....
This map details the bedrock geology, structural geology, surficial geology, geomorphology, and geol...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The southern Plomosa Mountains were the first range in west-central Arizona for which a published ge...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The study area includes the southern Roskruge Mountains and a small area of the northernmost Coyote ...
The purpose of this project is to integrate new detailed field mapping, aerial photograph interpreta...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated...