307:
279:
115:
314:
286:
414:. Those investigators who include the alluvium in the unit tend to refer to the unit as the Servilleta Formation, while those who do not tend to refer to the unit as the Servilleta Basalt.
306:
278:
805:
736:
456:. The shields are very gently sloping (less than 1.3 degrees) except for La Segita Peaks, which may be superimposed on an older
496:
The formation was first named by A.P. Butler, Jr., in his unpublished 1946 dissertation. In 1971, Burroughs added the Mesita
779:
Thompson, R.A.; Machette, M.N. (1989). "Geologic Map of the San Luis Hills Area, Conejos and
Costilla Counties, Colorado".
402:
Geologists have not reached consensus on whether the alluvium beds should be regarded as part of the formation. These are
760:
177:
184:
815:
719:
Lipman, Peter W.; Mehnert, Harald H. (1979). "The Taos
Plateau Volcanic Field, Northern Rio Grande Rift, New Mexico".
453:
810:
692:
655:
411:
138:
418:
746:
Manley, K.A. (1976). "K-Ar age determinations on
Pliocene basalts from the Espanola basin, New Mexico".
497:
128:
508:, to the formation. Lipman and Menhert advocated restricting the unit to the basalt flows in 1979.
114:
430:
426:
352:
344:
691:
Drakos, P.; Lazarus, J.; Riesterer, J.; White, B.; Banet, C.; Hodgins, M.; Sandoval, J. (2004).
732:
457:
442:
434:
422:
142:
784:
724:
407:
481:
461:
438:
359:
505:
501:
480:
The unit can be divided into three sets of flows separated by alluvium in the southern
449:
799:
233:
66:
24:
465:
396:
219:
41:
388:
348:
249:
223:
86:
51:
199:
186:
460:
volcano. Another shield, Cerro Mojino, is steeper (11 degrees) but may be a
403:
380:
371:
91:
35:
684:
Tertiary and
Quaternary geology of the Tusas-Tres Piedras area, New Mexico
387:. The basalt is distinctive for its olivine content (typically altered to
578:
576:
384:
356:
81:
76:
61:
56:
46:
28:
728:
485:
374:
96:
71:
484:. The alluvium separating the upper two flows is a significant local
469:
377:
165:
693:"Subsurface Stratigraphy in the Southern San Luis Basin, New Mexico"
761:"PreCambrian Geology of the Picuris Range, northcentral New Mexico"
399:
that are randomly oriented and have angular spaces between grains.
788:
472:, indicating extremely fluid lava that erupted nonexplosively.
781:
563:
561:
582:
548:
546:
544:
542:
395:
texture, in which the basalt contains microscopic laths of
119:
View of
Servilleta Basalt forming rim of Rio Grande Gorge.
700:
New Mexico
Geological Society Field Conference Guidebook
663:
New Mexico
Geological Society Field Conference Guidebook
597:
595:
593:
591:
656:"Geology of the San Luis Hills, south-central Colorado"
529:
527:
525:
523:
521:
433:
but thins to 50 feet (15 m) thick adjacent to the
768:
State Bureau of Mines and
Mineral Resources Bulletins
464:
rather than a vent. The shield volcanoes are free of
448:
The lavas appear to have all been erupted from five
445:
and on the northeast side of the
Picuris Mountains.
347:
that underlies most of the Taos Plateau of northern
263:
255:
244:
239:
229:
215:
176:
171:
161:
156:
148:
134:
124:
18:
355:of 3.6 to 4.5 million years, corresponding to the
686:. Cambridge, MA: Harvard University. p. 133.
429:. It is up to 1,500 feet (460 m) thick near
567:
625:
552:
8:
601:
113:
15:
533:
313:
285:
517:
637:
613:
370:The formation consists principally of
293:Servilleta Basalt (the United States)
7:
14:
441:against Santa Fe Group beds near
806:Neogene formations of New Mexico
312:
305:
284:
277:
321:Servilleta Basalt (New Mexico)
1:
296:Show map of the United States
568:Thompson & Machette 1989
759:Montgomery, Arthur (1953).
454:Taos Plateau volcanic field
832:
682:Butler, A. P. Jr. (1946).
383:with interlayered beds of
248:settlement of Servilleta,
152:1,500 ft (460 m)
626:Lipman & Mehnert 1979
553:Lipman & Mehnert 1979
271:
112:
23:
654:Burroughs, R.L. (1971).
492:History of investigation
488:known as the Agua Azul.
452:near the center of the
324:Show map of New Mexico
425:, Santa Fe Group, or
721:Special Publications
417:The formation rests
341:Servilleta Formation
196: /
25:Stratigraphic range
816:Pliocene volcanism
729:10.1029/SP014p0289
583:Drakos et al. 2004
427:Hinsdale Formation
406:similar to nearby
345:geologic formation
200:36.553°N 105.936°W
811:Basalt formations
458:basaltic andesite
435:Picuris Mountains
423:Picuris Formation
337:Servilleta Basalt
333:
332:
143:Picuris Formation
19:Servilleta Basalt
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476:Economic geology
450:shield volcanoes
325:
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205:36.553; -105.936
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16:
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602:Montgomery 1953
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482:San Luis Valley
478:
462:structural dome
368:
353:radiometric age
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120:
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628:, p. 297.
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534:Burroughs 1971
516:
515:
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506:San Luis Hills
502:trachyandesite
493:
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477:
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412:Santa Fe Group
404:lithologically
367:
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180:
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139:Santa Fe Group
136:
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789:10.3133/i1906
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748:Isochron/West
744:
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738:9781118664988
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419:unconformably
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234:United States
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34:4.5–3.6
30:
26:
22:
17:
780:
771:
767:
751:
747:
720:
708:. Retrieved
703:
699:
683:
671:. Retrieved
666:
662:
633:
621:
609:
504:flow in the
495:
479:
447:
416:
410:beds of the
401:
393:diktytaxitic
392:
369:
340:
336:
334:
264:Year defined
240:Type section
723:: 289–312.
638:Butler 1946
614:Manley 1976
439:downfaulted
408:sedimentary
397:plagioclase
366:Description
351:. It has a
220:Taos County
203: /
191:105°56′10″W
178:Coordinates
800:Categories
783:. I-1906.
648:References
391:) and its
389:iddingsite
372:tholeiitic
349:New Mexico
250:New Mexico
224:New Mexico
188:36°33′11″N
710:26 August
706:: 374–382
673:26 August
669:: 277–287
512:Footnotes
245:Named for
157:Lithology
149:Thickness
129:Formation
754:: 29–30.
437:. It is
385:alluvium
357:Pliocene
256:Named by
172:Location
135:Overlies
29:Pliocene
486:aquifer
466:spatter
421:on the
375:olivine
230:Country
162:Primary
103:↓
735:
498:Member
470:cinder
431:Embudo
378:basalt
259:Butler
216:Region
166:Basalt
764:(PDF)
696:(PDF)
659:(PDF)
443:Pilar
381:flows
360:epoch
343:is a
733:ISBN
712:2020
675:2020
500:, a
468:and
335:The
267:1946
125:Type
42:PreꞒ
785:doi
725:doi
339:or
802::
772:30
770:.
766:.
752:16
750:.
731:.
704:55
702:.
698:.
667:22
665:.
661:.
590:^
575:^
560:^
541:^
520:^
362:.
222:,
141:,
92:Pg
36:Ma
27::
791:.
787::
774:.
741:.
727::
714:.
677:.
640:.
616:.
604:.
585:.
570:.
555:.
536:.
97:N
87:K
82:J
77:T
72:P
67:C
62:D
57:S
52:O
47:Ꞓ
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
