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X-WR-CALNAME:Earth Planetary Science Seminar - Dr. Laura Webb "Is surface g
 eology linked to mantle structure beneath ancient orogens? New insights fr
 om the New England Seismic Transect (NEST)."
X-WR-TIMEZONE:Pacific Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260521T073807Z
UID:tag:localist.com\,2008:EventInstance_51197468860895
DTSTART:20251111T200000Z
DTEND:20251111T211500Z
DESCRIPTION:Laura Webb obtained her BS in Geology at UCLA and PhD in Geolog
 ical and Environmental Sciences at Stanford University. Following a post-d
 oc at the University of Geneva in Switzerland\, she was the noble gas ther
 mochronology laboratory manager and a Research Assistant Professor at Syra
 cuse University. In 2008 she moved to the University of Vermont where she 
 is currently a Professor in the Department of Geography and Geosciences. L
 aura’s research combines field work with (micro)structural and geochrono
 logical analyses to study tectonic histories and processes. Much of her wo
 rk has been conducted internationally in remote regions of Mongolia and Pa
 pua New Guinea. Her EPS seminar will highlight current NSF-funded collabor
 ative research much closer to home where she and colleagues from Williams 
 College and Yale University are working together on the NEST project (New 
 England Seismic Transect)\, in which data from passive seismic broadband a
 rrays (NEST\, SEISConn) have been used to image lithospheric structure. A 
 major geophysical finding is that the Moho step previously imaged using Ea
 rthScope data and interpreted to represent the suture between Laurentia an
 d accreted Appalachian terranes is\, rather\, a Moho overthrust. New geolo
 gic evidence from the western Appalachian front documents reverse motion a
 t ca. 420 Ma along faults that roughly coincide with a projected surface t
 race of the Moho overthrust. The reverse faults cut thrust faults from the
  Ordovician Taconic Orogeny and place Laurentian basement over its sedimen
 tary cover sequences. Many of the faults record (micro)structural and geoc
 hronological evidence for polyphase deformation. Are these faults related 
 to the Moho overthrust? Data from newly added NEST seismic node arrays wil
 l help image the crust in our quest to test links between the surface geol
 ogy and mantle structure.\n\n \n\n* For the Zoom link\, please email Xueya
 o Cheng  > xc272@stanford.edu
LOCATION:Building 320\, Geology Corner\, Room 220 and Zoom
SUMMARY:Earth Planetary Science Seminar - Dr. Laura Webb "Is surface geolog
 y linked to mantle structure beneath ancient orogens? New insights from th
 e New England Seismic Transect (NEST)."
URL;VALUE=URI:https://events.stanford.edu/event/earth-planetary-science-sem
 inar-dr-laura-webb-is-surface-geology-linked-to-mantle-structure-beneath-a
 ncient-orogens-new-insights-from-the-new-england-seismic-transect-nest
CATEGORIES:Class/Seminar
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