Prehistoric Hanging Canals of the Safford Basin
نویسنده
چکیده
Some recent studies have investigated the scale and scope of a remarkable series of late classic prehistoric (est. 1350 CE) water management structures found in Arizona’s upper Gila Valley. These canal systems are characterized by their being literally "hung" on the edges of steep sided, gently sloping mesas formed from remnant Quaternary age bajadas. The mesas today will appear characteristically rocky, sparsely vegetated, thinly soiled, and largely infertile.
منابع مشابه
Post-tectonic landscape evolution of a coupled basin and range: Pinaleño Mountains and Safford Basin, southeastern Arizona
The Pinaleño Mountains and adjacent Safford Basin are a landscape defined by the extensional tectonics of the Basin and Range physiographic province. However, over the last ~4 m.y., this coupled basin and range have been actively degrading in the absence of widespread regional extension. While rates of relief generation and upland erosion during active subsidence ca. 12–5 Ma are reflected in th...
متن کاملAn Impressed Pottery Sherd: A Chalcolithic Newfound in the Southern Highland of Abharroud River Basin
In prehistoric studies of Iran, the Abharrood River Basin, located on the east of Zanjan province and in the northwestborder of the Central Plateau, is one of the little-known and dark regions. Studying this region according to itsenvironmental features and geographical location is important for understanding regional relations and interregionalinteractions between three cultural-geographical a...
متن کاملMesozoic basin inversion in Central Alborz, evidence from the evolution of Taleqan-Gajereh-Lar paleograben
This paper presents evidence on Mesozoic inversion of basin bounding faults within the Taleqan-Gajereh-Lar Paleograben (TGLP) in Central Alborz Range. For this purpose, well documented stratigraphy data across the TGLP together with the new acquired structural data on the geometry and kinematics of the paleograben basin bounding faults are utilized. The TGLP has evolved through the Early and Mi...
متن کاملThe Dix-Hallpike test and the canalith repositioning maneuver.
The Dix-Hallpike test and the canalith repositioning maneuver (CRM) are used to diagnose and treat benign positional vertigo (BPV). Dix-Hallpike is the standard procedure for diagnosis of BPV, but if the horizontal canal is not tested for BPV and the Dix-Hallpike is only carried out once, the condition may not be diagnosed and appropriately treated. We describe our method of testing for BPV and...
متن کاملگاهنگاری مطلق (14C) و نسبی محوطه دوهگُز خوی با استفاده از روش طیفسنج جرمی شتاب دهنده (AMS)؛ شواهدی از دوره مسوسنگ انتقالی، دالما و پیزدلی
The settlement of Dava Göz situated about 15km SW of Khoy and 1.5km north of the Dizaj Diz town in NW Iran. Dava Göz is a small site at north of the Lake Urmia, measuring about 100×100m (ca. 1ha). The first season of archaeological excavation primarily aimed to clarifying the chronology, settlement organization, and respond to some of the fundamental questions such as the transi...
متن کامل