Questions:
To log this cache, answer the following questions from web research and observation (the signage was destroyed).
1. What does the word Tintina mean?
2. What significant geological activity presently occurs?
3. What are the by-products when two tectonic plates collide?
4. What causes the forest to tilt?
5.Tell me the headings on the signage in place to confirm you visited!
Beneath the Tintina Trench lies the Tintina Fault which is a strike-slip fault. A strike-slip fault moves laterally rather than up and down.
This means that over a period of time, river systems are forced to change course to adjust to the sideways movement of the land. The famous San Andres fault in California is an example of a strike-slip fault. In addition, the Tintina Trench has very rich mineral deposits including the Klondike gold and the lead-zinc deposits near Faro.
(B)
Shifting Understanding (Dormant to Active)
Past Belief: For years, scientists considered the fault inactive for 40 million years or more.
New Evidence: Recent studies using high-resolution satellite, drone, and lidar data reveal subtle landforms (fault scarps) showing significant past movement.
Recent Activity: Evidence suggests large earthquakes occurred within the last 2.6 million years, with some landforms showing shifts from events before the last Ice Age, though no major surface rupture has happened in the last 12,000 years.
Earthquake Potential
Major Threat: The fault has the potential for large, damaging earthquakes (magnitude 7.5 or higher).
Stress Buildup: Strain is accumulating, with roughly 20 feet of movement waiting to be released, similar to the San Andreas Fault.
Impact: A rupture could cause significant ground displacement, zigzag roads, and damage unreinforced buildings.
Significance
Active Hazard: The research confirms the Tintina Fault is not dormant and must be treated as an active seismic hazard.