d. The pluton formed after 55 Ma ago. - Answer If a xenolith included within an igneous pluton has a numerical age of 55 million years (Ma) old, what can you infer about the age of the pluton? a. The pluton formed before 55 Ma ago. b. The pluton formed before 100 Ma ago. c. The pluton formed exactly at 55 Ma ago. d. The pluton formed after 55 Ma ago. e. none of the above answers are correct as you cannot infer the pIuton's age based on the numerical ages d. atmosphere, nitrogen-...

Chert generally precipitates in deep ocean water because ________. - Answer None of the above answers are correct as chert typically precipitates in deep ocean water. Which of the following statements about joints are not important in enhancing weathering in rock? - Answer Joints increase tension in the rock causing weathering reaction rates to increase. Why is muscovite the most dominant mineral comprising most beach sand? - Answer It is not, quartz is. Quartz is more resistant t...

Which lines get closer together as they approach the poles? Lines of latitude of lines of longitude (circle one)? - Answer Latitude and longitude comprises a grid system of lines encircling the globe and is used to determine the locations of points on the earth. Lines of latitude, also called parallels, run east - west. Latitude lines always run parallel to each other, and hence, they are always an equal distance apart. What could explain the asymmetry of magnetic stripes on the ocean floo...