GEO 330 Lecture Notes - Lecture 17: Chasma Boreale, Polar Regions Of Earth, Plain

• School: Stony Brook University
• Department: Geosciences
• Course: GEO 330
• Professor: Timothy Glotch

Document Summary

North polar layered deposits can be divided into 2 units. Upper unit makes up most of the volume of the deposits. Layering within the unit is best seen in the northern spring and summer when sun-facing slopes of the valleys are defrosted. Layering is seen as alternating bright and dark bands as well as distinct breaks in slope. Some layers appear more resistant to erosion than others, and most can be traced uninterrupted fo(cid:396) (cid:1005)(cid:1004)"s of k(cid:373) A(cid:373)e sets of laye(cid:396)s (cid:272)a(cid:374) (cid:271)e see(cid:374) (cid:1005)(cid:1004)(cid:1004)"s of k(cid:373) apa(cid:396)t i(cid:374) moc i(cid:373)ages, (cid:449)ith (cid:448)e(cid:396)y little (cid:272)ha(cid:374)ge occurring between images. Three sets of images of the same trough. Right and middle images are separated by 13 km. Left and right images separated by 104 km. A(cid:373)e (cid:862)(cid:373)a(cid:396)ke(cid:396) (cid:271)ed(cid:863) (cid:272)a(cid:374) (cid:271)e see(cid:374) i(cid:374) ea(cid:272)h i(cid:373)age. Layers track exceptionally well between left and middle images, and similar layers seen in right image.