487:
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29:
345:
104:
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strata, had oil and gas shows while drilling and 27% recovered live oil or gas at surface. While there is substantial hydrocarbon potential in this basin alone, Portugal imports 100% of its fossil fuel. There are two major petroleum systems at work within the basin—Subsalt and
Suprasalt. In the subsalt petroleum system, there are Paleozoic source rocks and synrift Triassic
593:
reservoirs that are sealed by
Dagorda evaporites. In the suprasalt system, the oldest source rock is the Lower Brenha formation. The best reservoirs to mention include the Coimbra dolomite and Upper Dagorda carbonates, Candieiros oolitic and bioclastic grainstones, and the fractured carbonates of the
554:
during the lower and middle
Jurassic. These sediments are known as the Silves, Dagorda, and Coimbra Formations. Deposition of Carbonates of the Brenha and Candieros Formations are in shelf, ramp, and sub-marine fan environments and filled the basin during the early and middle Jurassic. The carbonate
588:
generation window. However, this is not the case throughout the entire basin. This is due to the highly heterogeneous nature of basin subsidence, especially in the Late
Jurassic. Around 100 exploratory wells have been drilled in the basin. 80% of these wells, from Triassic, Jurassic, and Cretaceous
417:
The most significant faults and salt structures throughout the
Lusitanian Basin trend north-northeast, parallel to the elongation of the shoreline. The faults that trend northeast to east-northeast are fewer in number. However, they are fairly substantial—for example, the Nazare Fault. The
576:). Above this sequence, deposition is dominated by the siliciclastics from the Meseta highlands. The Abadia formation is composed of shale, marl, siltstone, and minimal sandstone. The rest of the Upper Jurassic and Cretaceous is dominated by westward-prograding continental clastics.
572:, associated with significant tectonic activity, characterizes the top of the sequence. The carbonate shelf environment is still present in the Upper Jurassic—characterized by the Montejunto grainstone and reef facies, Cabacos organic-rich limestone (capped by
559:
beds also present. Below the halite-bearing evaporites that compose the
Dagorda formation are the synrift continental siliciclastics of the Silves formation. Above the Dagorda formation is the post-rift carbonate shelf environment—the Coimbra dolomite, Brenha
442:. Most of the faults within the basin are fairly high-angle, with some shallowing with depth observed. There is always faulting beneath salt structures and it is speculated that the movement of the salt structures is caused by basement-influenced faulting.
759:
Schneider, Simon; FĂĽrsich, Franz T.; Werner, Winfried (2010-11-01). "Marking the
Kimmeridgian-Tithonian transition with a bivalve – Protocardia gigantea sp. nov. (Bivalvia: Cardiidae) and its relatives from the Lusitanian Basin (Portugal)".
597:
N. Pimentel1 and R. Pena dos Reis (2016) - PETROLEUM SYSTEMS OF THE WEST IBERIAN MARGIN: A REVIEW OF THE LUSITANIAN BASIN AND THE DEEP OFFSHORE PENICHE BASIN. Journal of
Petroleum Geology, Vol. 39(3), July 2016, pp 305-326.
835:
401:
A major interval of tectonic dormancy followed. This is most likely due to the opening of the
Central Atlantic. During this time, in the Late Jurassic, there was widespread fault-controlled subsidence.
617:
Rasmussen, Erik S.; Lomholt, Steen; Andersen, Claus; Vejbæk, Ole V. (1998). "Aspects of the structural evolution of the
Lusitanian Basin in Portugal and the shelf and slope area offshore Portugal".
503:
The Lusitanian basin Triassic to Cretaceous rocks provided thousands of fossils, from plants, microfossils, invertebrates and vertebrates. The most productive formations are the Late Jurassic
660:
404:
The fourth and final active phase, initiated between the latest Late Jurassic and the earliest Early Cretaceous, triggered salt movement and the development of salt structures.
303:. The basin varies between approximately 130 kilometres (81 mi) and 340 kilometres (210 mi) in width and belongs to a family of periatlantic basins such as the
391:, the second active phase is characterized by minor salt movements along most substantial faults and occurs south of the substantial, centrally-located Nazaré fault.
490:
497:
936:
438:
are observed. The thrusting observed is resultant of the basement-attached inversion movements of the pre-existing normal faults during the
946:
353:
228:
486:
455:
Resultant of diapirism leading to the formation of salt pillows, the Lusitanian Basin can be divided into seven different sub-basins:
418:
north-trending faults are concentrated mainly in the central part of the Lusitanian Basin. These faults are a part of in important
154:
687:"Analysis of the Petroleum Systems of the Lusitanian Basin (Western Iberian Margin)—A Tool for Deep Offshore Exploration"
941:
46:
39:
885:"Petroleum Systems of the West Iberian Margin: A Review of the Lusitanian Basin and the Deep Offshore Peniche Basin"
531:
Stratigraphic column of the Lusitanian Basin during the time of its formation. Modified from GEOExPro (2016).
295:. It covers an area measuring 20,000 square kilometres (7,700 sq mi) and extends north-south from
730:
789:"Zby atlanticus, a new turiasaurian sauropod (Dinosauria, Eusauropoda) from the Late Jurassic of Portugal"
394:
The third active phase initiated during the beginning of the Late Jurassic. This phase is defined by the
372:
In the first active phase, during the Late Triassic to the Early Jurassic, rifting was initiated between
702:
594:
Brenha formation. Seals are tight or marly carbonates of the Brenha and overlying basal Upper Jurassic.
423:
405:
508:
504:
304:
419:
896:
626:
512:
284:
430:
extension within the basin. West-northwest trending faults are scattered throughout the basin. Both
316:
516:
324:
519:. This includes an outstanding abundance of Jurassic mammals, and dinosaur fossils and trackways.
268:
912:
865:
816:
235:
323:
connect to the southern end of the Lusitanian Basin. In the north, it connects to the Porto and
187:
857:
808:
427:
308:
288:
91:
536:
904:
847:
800:
769:
741:
690:
634:
199:
123:
527:
398:
of the Oxfordian succession on salt pillows that formed in association with fault activity.
28:
715:
551:
312:
263:
244:
211:
131:
900:
630:
539:
388:
344:
216:
177:
638:
930:
916:
745:
686:
361:
320:
240:
869:
836:"New Finds of Stegosaur Tracks from the Upper Jurassic LourinhĂŁ Formation, Portugal"
834:
Mateus, Octávio; Milà n, Jesper; Romano, Michael; Whyte, Martin A. (September 2011).
820:
773:
569:
435:
431:
373:
251:
804:
731:"Mesozoic Evolution of the Lusitanian Basin: Comparison with the Adjacent Margin"
381:
788:
565:
365:
861:
812:
368:, five distinct phases can be defined, with four stages of rifting activity:
61:
48:
590:
585:
573:
561:
556:
543:
81:
694:
852:
357:
292:
109:
550:
sand and clay that eventually evolved into deposition of shallow marine
547:
439:
223:
908:
307:. To the east of the Lusitanian Basin lies the Central Plateau of the
584:
In the basin, all Jurassic source-rocks could possibly be within the
377:
300:
127:
119:
884:
360:
extension. Throughout the complete formation of the basin, from the
555:
formations are commonly interbedded with shale and there are local
787:
Mateus, Octávio; Mannion, Philip D.; Upchurch, Paul (2014-04-16).
535:
The Lusitanian Basin is a late Triassic rift basin is filled with
485:
395:
343:
328:
296:
281:
204:
661:"Lusitanian basin highlights important potential in Portugal"
762:
Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen
729:
Montenat, C.; Guery, F.; Berthou, P.Y. (December 1988).
384:
and is concentrated in the central areas of the basin.
262:
250:
234:
222:
210:
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183:
173:
168:
160:
150:
142:
137:
115:
97:
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38:
21:
546:. In the late Triassic, there was deposition of
376:and Iberia. It is characterized by symmetrical
16:Geological formation off the coast of Portugal
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652:
650:
648:
8:
33:The regional setting of the Lusitanian Basin
680:
678:
612:
610:
608:
606:
493:Aire Range Dinosaur Tracks Natural Monument
256:
27:
851:
740:. Vol. 103. Ocean Drilling Program.
738:Proceedings of the Ocean Drilling Program
287:remnant located on both the mainland and
883:Pimentel, N.; Pena Dos Reis, R. (2016).
526:
602:
711:
700:
352:The Lusitanian Basin results from the
164:22,000 km (8,500 sq mi)
18:
685:Reis, Rui; Pimentel, N (2014-01-26).
659:Uphoff, Thomas L. (9 December 2002).
7:
354:opening of the North Atlantic Ocean
229:Opening of the North Atlantic Ocean
155:Iberian Mesozoic Sedimentary Basins
793:Journal of Vertebrate Paleontology
408:ended during the Early Cretaceous.
348:Surrounding geological structures.
14:
746:10.2973/odp.proc.sr.103.117.1988
102:
465:Northern Lusitanian Basin (NLB)
459:Southern Lusitanian Basin (SLB)
498:Calcários MicrĂticos Formation
462:Central Lusitanian Basin (CLB)
291:off the west-central coast of
1:
840:Acta Palaeontologica Polonica
639:10.1016/s0040-1951(98)00241-8
315:system lies to the west. The
937:Sedimentary basins of Europe
889:Journal of Petroleum Geology
805:10.1080/02724634.2013.822875
774:10.1127/0077-7749/2010/0093
963:
947:Mesozoic rifts and grabens
564:, and Cardieros carbonate
477:Monte Real Subbasin (MRSB)
26:
542:and capped by post-rift
474:Bombarral Subbasin (BSB)
580:Hydrocarbon exploration
471:Turcifal Subbasin (TSB)
710:Cite journal requires
695:10.13140/2.1.4688.4809
532:
500:
349:
853:10.4202/app.2009.0055
665:Oil & Gas Journal
530:
523:Regional stratigraphy
489:
468:Arruda Subbasin (ASB)
426:which highlights the
406:Extensional tectonics
347:
513:Montejunto Formation
62:39.43611°N 8.93722°W
942:Geology of Portugal
901:2016JPetG..39..305P
631:1998Tectp.300..199R
517:Papo Seco Formation
515:and the Cretaceous
58: /
533:
509:Alcobaça Formation
505:LourinhĂŁ Formation
501:
424:Estremadura Trough
413:Structural geology
350:
305:Jeanne d'Arc Basin
67:39.43611; -8.93722
909:10.1111/jpg.12648
309:Iberian Peninsula
289:continental shelf
274:
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92:Iberian Peninsula
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625:(1–4): 199–225.
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568:. A substantial
420:structural trend
335:Geologic history
327:via an undersea
278:Lusitanian Basin
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22:Lusitanian Basin
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446:Characteristics
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245:Late Cretaceous
188:Lagoa de Ă“bidos
138:Characteristics
132:Figueira da Foz
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895:(3): 305–326.
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846:(3): 651–658.
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799:(3): 618–634.
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768:(2): 167–184.
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712:|journal=
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619:Tectonophysics
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389:Early Jurassic
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325:Galicia Basins
321:Algarve Basins
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436:normal faults
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432:thrust faults
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362:Late Triassic
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311:. A marginal
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703:cite journal
668:
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596:
583:
570:unconformity
534:
502:
492:
482:Paleontology
454:
451:Subdivisions
416:
382:half-grabens
374:Newfoundland
351:
277:
275:
269:Nazaré Fault
257:Stratigraphy
252:Stratigraphy
586:hydrocarbon
422:within the
387:During the
143:On/Offshore
65: /
40:Coordinates
931:Categories
566:grainstone
544:evaporites
366:Cretaceous
200:Basin type
50:39°26′10″N
917:133243243
862:0567-7920
813:0272-4634
591:sandstone
574:anhydrite
562:limestone
557:turbidite
552:dolomites
428:Oxfordian
396:onlapping
340:Tectonics
169:Hydrology
82:Lusitania
78:Etymology
53:8°56′14″W
870:55869900
821:59387149
358:Mesozoic
317:Alentejo
293:Portugal
217:Eurasian
110:Portugal
897:Bibcode
627:Bibcode
548:fluvial
537:synrift
440:Miocene
378:grabens
364:to the
356:due to
224:Orogeny
194:Geology
184:Lake(s)
151:Part of
98:Country
915:
868:
860:
819:
811:
511:, and
301:Lisbon
264:Faults
174:Sea(s)
128:Leiria
124:Aveiro
120:Lisbon
116:Cities
107:
88:Region
913:S2CID
866:S2CID
817:S2CID
734:(PDF)
329:ridge
313:horst
297:Porto
285:basin
280:is a
212:Plate
858:ISSN
809:ISSN
716:help
491:The
434:and
380:and
319:and
282:rift
276:The
205:Rift
161:Area
146:Both
905:doi
848:doi
801:doi
770:doi
766:258
742:doi
691:doi
669:100
635:doi
623:300
299:to
236:Age
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714:(
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