Mark whether the following is an example of absolute time or relative time The h

Question

Mark whether the following is an example of absolute time or relative time

The high-pressure metamorphic sole of the Palawan ophiolite of the western Philippines give 34 million years old Ar-Ar ages which makes these rocks younger than similar rocks of the Franciscan Complex of California that give Lu-Hf and Ar-Ar ages of 155-170 million years U-Pb zircon and Lu-Hf garnet ages of eclogite in the Sanbagawa Belt of Japan are 120 million years and 89 million years old, respectively, giving rise to controversy over the age of eclogitic metamorphism in those rocks. In a rock a hornblende crystal is rimmed by glaucophane indicating that the glaucophane grew after the hornblende. The Feather River canyon is incised (ie the canyon was cut) into granitic and metamorphic rocks. This shows that the development of the canyon is younger than those rocks. Folds in Franciscan Complex rocks are displaced (cut off) by the Rodgers Creek fault indicating that movement on the Rodgers Creek fault is younger than the folds of the Franciscan Complex. The Modesto Formation overlies the Riverbank Formation in Fresno indicating that the Riverbank Formation is older than the Modesto Formation. The U-Pb ages of the youngest granites in the Sierra Nevada is 85 million years old, whereas the youngest zircons in some units of the Franciscan Complex have U-Pb ages of 34 million years indicating that the youngest zircons in those Franciscan rocks could not have been derived from Sierra Nevada granites.

Explanation / Answer

a) absolute time

b) absolute time

c) relative time

d) relative time

e) relative time

f) absolute time

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.