Datingmap org

23-Oct-2017 07:42 by 7 Comments

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Field evidence for more recent motion is lacking on both faults.In this study we combine on-fault observations of surface displacements in soils deposited during the past millennium over the Polochic fault trace at Agua Blanca, with a nearby record of lacustrine seismites that spans the past twelve centuries in lake Chichój (Fig.

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However, observations conducted at the site before the opening of the trenches failed to detect any topographic discontinuity C dating indicates that sedimentation has been fairly uniform over the past 5–7 centuries throughout the floodplain, at a rate of 2–4 mm/y (Additional information, Table S1-2).(B) Close up map of Lake Chichój with coring sites (dotted circles).Core used for the composite section in red, cores in yellow not used in this study but described in Fig. Map generated using Arc GIS 10 (https:// and Corel Draw 12 (The most recent major destructive earthquake on the plate boundary occurred in Haiti in 2010 CE, as a M study of recent fault slip with a near-fault record of ground shaking-induced turbidites in a lake (seismo-turbidites or seismites).Combining both methods informs the paleoseismic behavior of the plate boundary over a millennial timescale.Here instead we use a near-fault record of lacustrine seismites to test whether disruptions to floodplain soils produced by a major fault were accompanied by ground shaking.

We show that some of the fault slip observed across the floodplain occurred during a 5-century-long period of tectonic quiescence, during which no seismites were generated.

6), however they reach an age separation of up to 100 years half way up section.

This discrepancy may arise from the incompleteness of the varve counting, or from deposition of the wooden material in the lake decades after its growth.

On-fault trenches provide direct evidence for fault displacement, but generally do not allow the distinction between seismic and aseismic slip.

In paleoseismological studies ground disruptions are almost invariably attributed to seismic slip are commonly measured on many faults today.

2)., 6: cities damaged around 830 CE, 7: hot springs, 8: sulfate-rich springs.