Studies in Geology, No. 3 



TALAJZA 



yPPEJZ 

 ZOJZRTTOS ' 

 20O(?}fi,t 



310 f«t " 



LOWER J 

 ZORltlTOS "^ 



243 P««t 



fen) 



ToA. gi(p»if«fo«s »hal«s. Similar i' ooni^ H»o1h 



Connortha// ■sandfTonf 



lieartf conglomero1»5, janj^toivs, locoKij calcortooi 

 ani Po3»iliferou», locolJu /ooj* ond iViobl*. Color 

 prerailin^li] yellow. 



Grten cloi(, 'ocolltj rvd, ^reij, purpliih 



Ton corDonoc«oy4 shol«, offcn <va«./cr«i^, iviathtrs j.m//«f to H»»ll) 



Wgnile 



0<js1«r b«d, -foiflij p«f»i9l«oT 



Hro/if b>d3 oj? p•bblv3,>Vl^h sandi| and or^i lloooos maint 

 interbeddrd with Vorie^ci+rd cloi/s ond loos«, fr/obl* 

 sand s't'onrA 



Grern ciot^. iocodtj ^'d, ^>'*tf> Oi^rpliffh 



Hraru b«dd«d ''^ht utllour sartdjtone Wi't») shoU loTef- 

 colotions. Usuoll"^ ptbbl<( and looa Hi) corv|lomera+ie. 

 ■F'r»au»nt'« red or rv>ti< from iron *t»in5 . Xoca'lij 



yeru calco'"eous ond -Poijiliftrous . 



Thinner b<dd«d Ii^ht colored Sffndslonia miU abundani 

 inTircalot'ona of ^na^ To i^'Wow. sand<j JhaV-s, somt o-P 

 Yvhieh or? carbenoceoai and contain planT -prdjmtfntfi. 



Sof^ dark: gr«« »^lol«s, »/iJti corbonate nodol«a, r»<a-(h«rin£ 

 to dork brorrn looj« cla« rviti tnuch saUnitc . 



1 nferbeddjd dark grei) sbalfS, (i|fit ire^ to idlow.jh ?<«(( 

 shales, and f^'n b'ds of loos* Sood. 



5cev.le, one Inch = 250'. 

 Fig. I. — Section of the Tertiary of the Zorritos district. 



