PALEOZOIC , I MESOZOIC 
258 
IOWA ACADEMY OF SCIENCE 
Periods 
SUB-P. 
Series 
Terranes 
Thick 
Rocks 
JURASSIC 
Late 
Interval 
Unconformity 
Mid 
M orris onian— 
Chaquaqua ... 
Travester 
Exter 
150 
100 
75 
Shales 
Shales 
Sandstones 
Interval 
Unconformity 
Early.. 
Zunian. 
McElmo 
La Plata ... 
300 
300 
Shales 
Sandstones 
TRIASSIC 
Late 
Dolor esian 
Wingate 
Le Roux 
Shinarump 
900 
800 
600 
Sandstones 
Shales 
Conglomerate 
Mid .... 
Interval 
Unconformity 
Early... 
Dockuman 
Trujillo 
Tecovas 
300 
200 
Shales 
Shales 
Interval 
Unconformity 
CARBONIC—.— 
Late 
Cimarronian... 
Quarter- 
master 
Greer 
Chaves 
150 
125 
425 
Shales 
Shales 
Shales 
Interval 
Unconformity 
Guadaloupan.. 
Capitan 
Eddy 
2500 
lO'OO 
Limestones 
Sandstones 
Interval 
Unconformity 
Mid 
Bernalillan 
Torrance 
Yeso 
Manzano 
500 
600 
500 
Shales 
Shales 
Sandstones 
Interval 
Unconformity 
Maderan 
Tellera 
Gallegos 
Antonito 
300 
100 
200 
Limestones 
Sandstones 
Limestones 
Lunasan 
Mosca ... 
Coyote .... 
Montosa 
Sandia 
200 
75 
400 
250 
Limestones 
Sandstones 
Limestones 
Shales 
Interval 
tTneonformity 
Ladronesian-.. 
Alamito 
200 
Shales 
Early 
Tennessean 
Interval 
Unconformity 
Mississippian-. 
Modoc 
Sierra 
Lake Valley. 
Grande 
20i0 
50 
150 
25 
Limestones 
Limestones 
Limestones 
Limestones 
Waverlyan 
Interval 
Unconformity 
*rkT7'‘\7'rMSJTr^ 
Late 
Berenda 
50 
Limestones 
Interval 
Unconformity 
JJxii V UiNlV-/-— 
Mid 
Perchan 
Bella 
Silver 
250 
200 
Shales 
Shales 
Early.. 
Interval 
Unconformity 
?:iTTTPTn 
Late 
Wanting 
Mid 
Santa Ritan— 
Naiad 
250 
175 
Limestones 
Limestones 
Cibola 
Early.„ 
Interval 
Uncon formi tv 
