Richard B Waitt, PhD
Research Geologist at the Cascades Volcano Observatory.
Science and Products
Filter Total Items: 22
Many monstrous Missoula floods down channeled scabland and Columbia Valley, Washington
The late Wisconsin Missoula floods are Earth's largest known discharges of fresh water. They carved Washington's Channeled Scabland--made famous by J H. Bretz's writings in the 1920s to 1950s--and deposited sporadic huge gravel bars in the Scab-lands and Columbia valley. Since the late 1970s the great floods have been shown to number several score and to have been released as gigantic jökulhlaups.
Authors
Richard B. Waitt, Roger P. Denlinger, Jim O'Connor
Glacier Peak - history and hazards of a cascade volcano
No abstract available.
Authors
Larry Mastin, Richard B. Waitt
Volcanism and ice interactions on Earth and Mars
Volcano/ice interactions produce meltwater. Meltwater can enter the groundwater cycle and under the influence of hydrothermal systems, it can be later discharged to form channels and valleys or cycled upward to melt permafrost. Water or ice-saturated ground can erupt into phreatic craters when covered by lava. Violent mixing of meltwater and volcanic material and rapid release can generate lahars
Authors
Mary G. Chapman, Carlton C. Allen, Magnus T. Gudmundsson, Virginia C. Gulick, Sveinn P. Jakobsson, Baerbel K. Lucchitta, Ian P. Skilling, Richard B. Waitt
Preliminary volcano-hazard assessment for Augustine Volcano, Alaska
Augustine Volcano is a 1250-meter high stratovolcano in southwestern Cook Inlet about 280 kilometers southwest of Anchorage and within about 300 kilometers of more than half of the population of Alaska. Explosive eruptions have occurred six times since the early 1800s (1812, 1883, 1935, 1964-65, 1976, and 1986). The 1976 and 1986 eruptions began with an initial series of vent-clearing explosions a
Authors
Christopher F. Waythomas, Richard B. Waitt
No evidence for post-icesheet cirque glaciation in New England
No abstract available.
Authors
Richard B. Waitt, P. Thompson Davis
Periodic jökulhlaups from Pleistocene glacial Lake Missoula-New evidence from varved sediment in northern Idaho and Washington
Newly examined exposures in northern Idaho and Washington show that catastrophic floods from glacial Lake Missoula during late Wisconsin time were repeated, brief jökulhlaups separated by decades of quiet glaciolacustrine and subaerial conditions. Glacial Priest Lake, dammed in the Priest River valley by a tongue of the Purcell trench lobe of the Cordilleran ice sheet, generally accumulated varved
Authors
Richard B. Waitt
Tens of successive, colossal Missoula floods at north and east margins of channeled scabland
In deposits of Pleistocene glacial lakes in northern Idaho and Washington, beds comprising 20 to 55 varves (average = 35-40) separate each successive graded gravel or sand bed that was swiftly emplaced by a catastrophic flood from glacial Lake Missoula. The floodlaid beds are similar to rhythmic successions of 40 or more graded beds in backflooded tributaries of the lower Columbia River. This new
Authors
Richard B. Waitt
Concepts of classification and nomenclature for surficial deposits
No abstract available.
Authors
Richard B. Waitt
Late Cenozoic deposits, landforms, stratigraphy, and tectonism in Kittitas Valley, Washington
Kittitas Valley, a structurally determined wide segment of the Yakima River valley, is partly filled with the Pliocene Thorp Gravel and with Pleistocene till, outwash, and related sediment that accumulated during three glaciations. The Thorp Gravel, whose age according to fission-track dating is about 3.7 m.y., forms a conspicuous fill terrace locally as high as 130 m. Bodies of drift, all younger
Authors
Richard B. Waitt
Guidebook to Quaternary geology of the Columbia, Wenatchee, Peshastin, and upper Yakima valleys, west-central Washington
No abstract available.
Authors
Richard B. Waitt
Science and Products
Filter Total Items: 22
Many monstrous Missoula floods down channeled scabland and Columbia Valley, Washington
The late Wisconsin Missoula floods are Earth's largest known discharges of fresh water. They carved Washington's Channeled Scabland--made famous by J H. Bretz's writings in the 1920s to 1950s--and deposited sporadic huge gravel bars in the Scab-lands and Columbia valley. Since the late 1970s the great floods have been shown to number several score and to have been released as gigantic jökulhlaups.
Authors
Richard B. Waitt, Roger P. Denlinger, Jim O'Connor
Glacier Peak - history and hazards of a cascade volcano
No abstract available.
Authors
Larry Mastin, Richard B. Waitt
Volcanism and ice interactions on Earth and Mars
Volcano/ice interactions produce meltwater. Meltwater can enter the groundwater cycle and under the influence of hydrothermal systems, it can be later discharged to form channels and valleys or cycled upward to melt permafrost. Water or ice-saturated ground can erupt into phreatic craters when covered by lava. Violent mixing of meltwater and volcanic material and rapid release can generate lahars
Authors
Mary G. Chapman, Carlton C. Allen, Magnus T. Gudmundsson, Virginia C. Gulick, Sveinn P. Jakobsson, Baerbel K. Lucchitta, Ian P. Skilling, Richard B. Waitt
Preliminary volcano-hazard assessment for Augustine Volcano, Alaska
Augustine Volcano is a 1250-meter high stratovolcano in southwestern Cook Inlet about 280 kilometers southwest of Anchorage and within about 300 kilometers of more than half of the population of Alaska. Explosive eruptions have occurred six times since the early 1800s (1812, 1883, 1935, 1964-65, 1976, and 1986). The 1976 and 1986 eruptions began with an initial series of vent-clearing explosions a
Authors
Christopher F. Waythomas, Richard B. Waitt
No evidence for post-icesheet cirque glaciation in New England
No abstract available.
Authors
Richard B. Waitt, P. Thompson Davis
Periodic jökulhlaups from Pleistocene glacial Lake Missoula-New evidence from varved sediment in northern Idaho and Washington
Newly examined exposures in northern Idaho and Washington show that catastrophic floods from glacial Lake Missoula during late Wisconsin time were repeated, brief jökulhlaups separated by decades of quiet glaciolacustrine and subaerial conditions. Glacial Priest Lake, dammed in the Priest River valley by a tongue of the Purcell trench lobe of the Cordilleran ice sheet, generally accumulated varved
Authors
Richard B. Waitt
Tens of successive, colossal Missoula floods at north and east margins of channeled scabland
In deposits of Pleistocene glacial lakes in northern Idaho and Washington, beds comprising 20 to 55 varves (average = 35-40) separate each successive graded gravel or sand bed that was swiftly emplaced by a catastrophic flood from glacial Lake Missoula. The floodlaid beds are similar to rhythmic successions of 40 or more graded beds in backflooded tributaries of the lower Columbia River. This new
Authors
Richard B. Waitt
Concepts of classification and nomenclature for surficial deposits
No abstract available.
Authors
Richard B. Waitt
Late Cenozoic deposits, landforms, stratigraphy, and tectonism in Kittitas Valley, Washington
Kittitas Valley, a structurally determined wide segment of the Yakima River valley, is partly filled with the Pliocene Thorp Gravel and with Pleistocene till, outwash, and related sediment that accumulated during three glaciations. The Thorp Gravel, whose age according to fission-track dating is about 3.7 m.y., forms a conspicuous fill terrace locally as high as 130 m. Bodies of drift, all younger
Authors
Richard B. Waitt
Guidebook to Quaternary geology of the Columbia, Wenatchee, Peshastin, and upper Yakima valleys, west-central Washington
No abstract available.
Authors
Richard B. Waitt