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Cretaceous and lower Tertiary stratigraphy of the Gurabo and El Yunque quadrangles, Puerto Rico
| Content Provider | Semantic Scholar |
|---|---|
| Author | Seiders, Victor M. |
| Copyright Year | 1971 |
| Abstract | .______________________________________ Fl Introduction-_____________________________________________________ 1 Nomenclature.____________________________________________________ 3 Geologic setting.__________________________________________________ 4 Stratified rocks north of the Leprocomio fault_____--____-________-_-_8 Unnamed volcaniclastic rocks.__________________________________ 8 Tabonuco Formation_________________________________________ 8 Barrazas Formation______________________________________ 16 Hato Puerco Formation_____________________________________.__ 17 Cambalache Formation_______________________________________ 22 Definition and stratigraphic relationships.____________________ 22 Lithology_______________________________________________ 23 Volcanic breccia.______________________________________ 23 Volcanic sandstone and mudstone..-.-------------------25 Mudstone slabs______________________________________ 25 Toma de Agua Vitrophyre Member._____________________ 26 Secondary minerals____________________________________ 26 Age and correlation._______________________________ 27 Can6vanas Formation________________________________________ 27 Martin Gonz&lez Lava.__________________________ 30 Frailes Formation.__________________________________ 33 Definition and stratigraphic relationships.__________--_--_---_ 33 Lithology______________________________--_-___-34 Lower part.__________________________________________ 34 Middle part..__________________________ 35 Lava members________________________________________ 36 Leprocomio Mudstone Member________________________ 36 Conditions of deposition________________________________ 37 Age and correlation__________________________________-_-__37 Monacillo Formation_________________________________________ 38 Definition and stratigraphic relationships___________---_----__ 38 Lithology-____________________________________________-___ 39 Lower part_____._.____________________ _ 39 Trujillo Alto Limestone Member._____________________ 39 Cretaceous-Tertiary disconformity_________________-___--_--39 Correlation and age----_____-____--___-___-__-___-----_-__40 Guaracanal Formation,..______________________ __ 40 Stratified rocks between the Leprocomio and Cerro Mula faults._________ 42 Hato Puerco Formation___-__________-_____-___--__-_----_----42 Infierno Formation.______._.____..___.___________ _ 42 Celada Formation.___________________________.__-_-_-_ 44 Lomas Formation___________________________________ 46 Stratified rocks south of the Cerro Mula fault.._-_-__-_____--_-48 Rio Orocovis Group Los Negros Formation_____.________---_-48 |
| File Format | PDF HTM / HTML |
| DOI | 10.3133/b1294F |
| Alternate Webpage(s) | https://pubs.usgs.gov/bul/1294f/report.pdf |
| Alternate Webpage(s) | https://doi.org/10.3133/b1294F |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
