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Gravity Matters: A Meditation on Falling and Failing
No full textThis chapter begins with the assertion that there is a profound interconnectedness between how we think about the world and how we move through it. Using examples from everyday life as well as Contact Improvisation, a form of contemporary dance that embraces a horizontal perspective on the world, this chapter charts the cultural, economic, and somatic parallels between falling and failure – between our physical experiences and their metaphysical implications. Falls knock us off our feet, confusing our sense of place in the world. These radical shifts in orientation from vertical to horizontal register in our connective tissue as well as our psyche to conjure a deep fear of failure. Falls can be traumatic to be sure, disorienting at the very least. But falling can also inspire new perspectives – as can failing – including ones that challenge our expectations of individual success, economic prosperity, and political stability. Taken seriously, falling can teach us about connecting to the support of gravity, helping us navigate the inevitable slips and failures of life with a little more imagination and grace
A Socio-Spatial Approach to Define Priority Areas for Bicycle Facilities Using Covid-19 Data
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Progressive Miocene unroofing of the Big Maria and Riverside Mountains (SE California, USA) along the southwestern margin of the Colorado River extensional corrido
No full textThe Colorado River extensional corridor (CREC) consists of Miocene metamorphic core complexes exhumed along top- to- the-NE low-angle detachment faults. The Big Maria and Riverside Mountains of southeastern California (USA) are located on the southwestern margin of the CREC, where little is known about the nature and timing of large-magnitude extension. We present the first detailed (U-Th)/He thermochronometric data from these ranges, elucidating the geometry and timing of upper-crustal extensional unroofing and exhumation. The Riverside Mountains yielded ca. 72–50 Ma zircon (U-Th)/He (ZHe) ages in the hanging wall of the Riverside detachment fault, and the corrugated footwall yielded ca. 50–18 Ma ZHe ages, indicating the preservation of an exhumed ZHe partial retention zone. Apatite (U-Th)/He data further indicate a potential secondary Miocene breakaway in the northeastern end of the range. Although the Big Maria Mountains have been thought to lie outside of the CREC, our new zircon and apatite (U-Th)/He data show that the entirety of the Big Maria Mountains was tectonically exhumed in the footwall of a detachment fault and cooled from \u3e6 km depth between 22 and 15 Ma. ZHe data from both ranges suggest the Big Maria Mountains are part of the CREC and were exhumed from underneath the Riverside Mountains by a contemporaneous but structurally lower detachment—the Big Maria detachment—that is regionally correlative with the breakaway zone that delimits the western CREC margin. This detachment is temporally coeval with the structurally higher detachment system that forms the Whipple-Buckskin-Rawhide-Harcuvar-Harquahala meta morphic core complex belt to the northeast
