Question

4. Figure 8-M2 provides several equal-area plots of structural data collected in a fold-thrust belt. If you wish, you may reduce a Schmidt net to the appropriate size to determine carefully the attitudes of the structures shown, but you should be able to estimate the attitudes of structures from the equal-area plots. (a) Estimate the attitudes of the structures shown in each plot. (b) Describe the contour pattern (e.g., a girdle, a point concentration). (c) With the results of part a, construct a synoptic diagram of the data. (d) Write a brief interpretation of the structures in the area.

Answer 1

a) Estimal e lhe at 'dues of the skiu,tunes Poley to beddin Poles to ceka*g r9 APPnon imat atdotc of Hhe bed ae Attidute of celevage- st set slike Eus dis sooth cast.

Attitde o Stnike sli aults Sel 1 Stnike East - west $o dip towand sout Scl Stnike Cast - west, 8o diptooundy noth Stnike wonthest- south cast , dip 8o lowands nonthcost stnike Nonthwest-Sou th east, die 80° towardうSouth Lose b) The Contoun P a Point conentien attenn e.g., a Jsidel The conou Pattenn is a Point Concentnation ay the Point ane Scatlened just clase to Cach ohen and do not Po Pant of agneat sindle of the data Dnaw the Fold oith diPand dinechon mentioncJ aboue, Nention the nonth South cast, west dincchion in ke diagnam Dna cleave to the fold accondinj te he above atlitode