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Did two massive earthquakes in the Holocene induce widespread landsliding and near-surface deformation in part of the Ottawa Valley, Canada?

2000· article· en· W2143226061 on OpenAlex
J M Aylsworth, Dan Lawrence, J. Guertin

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueGeology · 2000
Typearticle
Languageen
FieldEnvironmental Science
TopicLandslides and related hazards
Canadian institutionsGeological Survey of Canada
Fundersnot available
KeywordsNova scotiaCitationGeological surveyRidgeIconHoloceneLibrary scienceGeologyArchaeologyHistoryPaleontologyComputer science

Abstract

fetched live from OpenAlex

Research Article| October 01, 2000 Did two massive earthquakes in the Holocene induce widespread landsliding and near-surface deformation in part of the Ottawa Valley, Canada? J.M. Aylsworth; J.M. Aylsworth 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Search for other works by this author on: GSW Google Scholar D.E. Lawrence; D.E. Lawrence 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada Search for other works by this author on: GSW Google Scholar J. Guertin J. Guertin 28 Pine Ridge Road, Halifax, Nova Scotia B3N 1C6, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information J.M. Aylsworth 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada D.E. Lawrence 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada J. Guertin 28 Pine Ridge Road, Halifax, Nova Scotia B3N 1C6, Canada Publisher: Geological Society of America Received: 20 Mar 2000 Revision Received: 06 Jul 2000 Accepted: 17 Jul 2000 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2000) 28 (10): 903–906. https://doi.org/10.1130/0091-7613(2000)28<903:DTMEIT>2.0.CO;2 Article history Received: 20 Mar 2000 Revision Received: 06 Jul 2000 Accepted: 17 Jul 2000 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation J.M. Aylsworth, D.E. Lawrence, J. Guertin; Did two massive earthquakes in the Holocene induce widespread landsliding and near-surface deformation in part of the Ottawa Valley, Canada?. Geology 2000;; 28 (10): 903–906. doi: https://doi.org/10.1130/0091-7613(2000)28<903:DTMEIT>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Recent evidence based on ages of large landslides and the existence of severely disturbed terrain in Champlain Sea sediments to the east of Ottawa suggests that this area may have been the site of two of the most geologically destructive earthquakes in eastern Canada. The walls of several paleochannels, downcut into sensitive marine clayey silts, are scarred by numerous large earthflows of sizes unequaled in historical time. While radiocarbon ages of 15 landslides, as much as 35 km apart, range from ca. 1870 to 5130 yr B.P., the majority of events cluster at ca. 4550 yr B.P. The coincidence of numerous large failures in different paleovalleys, occurring concurrently, long after channel abandonment and at a time of drier climate, suggests that the widespread landsliding was triggered by a strong earthquake. Close to the landslide area, areas of very disturbed terrain in a flat erosional plain show severely deformed bedding and irregular ground subsidence and are attributed to a large earthquake, ca. 7060 yr B.P., that strongly shook a thick sequence of sensitive material filling deep, steep-sided, bedrock basins. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.278
Threshold uncertainty score0.802

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.006
GPT teacher head0.195
Teacher spread0.190 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it