An upper Paleogene shallowing-upward sequence in the southern Sandino Forearc Basin (NW Costa Rica): response to tectonic uplift

Andjić, Goran; Baumgartner‐Mora, Claudia; Baumgartner, Peter O.

doi:10.1007/s10347-016-0463-y

Cited by 7 publications

(18 citation statements)

References 75 publications

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“…Updated chronostratigraphic chart of the Sandino Forearc Basin (stratigraphic data from: Andjić et al., ; Astorga, ; Baumgartner et al., ; Dengo, ; Di Marco et al., ; Hoffstetter et al., ; Joy, ; Pons et al., ; Ranero et al., ; Weyl, ; Wilson, , , ; Zoppis Bracci & Del Giudice, ; this study). Localities indicated in the upper part of the figure are depicted in the map (lower left) and in Figures and .…”

Section: Introductionmentioning

confidence: 80%

“…Geological map of the Sandino Forearc Basin in the southern Nicaraguan Isthmus (modified after Andjić et al., ; Astorga, ; Baumgartner et al., ; Darce & Duarte, ; Dengo, ; Denyer & Alvarado, ; Escuder‐Viruete et al., ; Weyl, ). Offsore isopachs represent the thickness of the sedimentary infill (after Stephens, ).…”

Section: Introductionmentioning

confidence: 99%

“…The age and facies of these new units may shed a new light on the basin evolution. In a recent paper, we updated the stratigraphy of the Costa Rican part of the SFB, with the description of two new, shallow‐shelf formations (Andjić, Baumgartner‐Mora, & Baumgartner, ; Figures and ). In this study, we present facies descriptions and biostratigraphic data of previously undescribed lithologies.…”

Section: Introductionmentioning

confidence: 99%

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Tectono‐stratigraphic response of the Sandino Forearc Basin (N‐Costa Rica and W‐Nicaragua) to episodes of rough crust and oblique subduction

Andjić

Baumgartner‐Mora

Baumgartner

et al. 2018

The Depositional Record

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The southern Central American active margin is a world-class site where past and present subduction processes have been extensively studied. Tectonic erosion/accretion and oblique/orthogonal subduction are thought to alternate in space and time along the Middle American Trench. These processes may cause various responses in the upper plate, such as uplift/subsidence, deformation, and volcanic arc migration/shut-off. We present an updated stratigraphic framework of the Late Cretaceous-Cenozoic Sandino Forearc Basin (SFB) which provides evidence of sedimentary response to tectonic events. Since its inception, the basin was predominantly filled with deep-water volcaniclastic deposits. In contrast, shallow-water deposits appeared episodically in the basin record and are considered as tectonic event markers. The SFB stretches for about 300 km and varies in thickness from 5 km (southern part) to about 16 km (northern part). The drastic, along-basin, thickness variation appears to be the result of (1) differential tectonic evolutions and (2) differential rates of sediment supply. (1) The northern SFB did not experience major tectonic events. In contrast, the reduced thickness of the southern SFB (5 km) is the result of at least four uplift phases related to the collision/accretion of bathymetric reliefs on the incoming plate: (i) the accretion of a buoyant oceanic plateau (Nicoya Complex) during the middle Campanian; (ii) the collision of an oceanic plateau (?) during the late Danian-Selandian; (iii) the collision/accretion of seamounts during the late Eocene-early Oligocene; (iv) the collision of seamounts and ridges during the Pliocene-Holocene. (2) The northwestward thickening of the SFB may have been enhanced by high sediment supply in the Fonseca Gulf area which reflects sourcing from wide, high relief drainage basins. In contrast, sedimentary input has possibly been lower along the southern SFB, due to the proximity of the narrow, lowland isthmus of southern Central America. Moreover, two phases of strongly oblique subduction affected the margin, producing strike-slip faulting in the forearc basin: (1) prior to the Farallon Plate breakup, an Oligocene transpressional phase caused deformation and uplift of the basin depocenter, triggering shallowing-upward of the Nicaraguan Isthmus in the central and northern SFB; (2) a Pleistocene--

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Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tectono‐stratigraphic response of the Sandino Forearc Basin (N‐Costa Rica and W‐Nicaragua) to episodes of rough crust and oblique subduction

Andjić

Baumgartner‐Mora

Baumgartner

et al. 2018

The Depositional Record

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“…After then, there was moderate subsidence at a relatively constant rate (Figure ). Andjić, Baumgartner‐Mora, and Baumgartner () and Ranero, von Huene, Flueh, Duarte, et al () both postulated a Late Eocene deformation phase in the Sandino forearc basin. However, such a deformation phase cannot be verified by field data (Kumpulainen, ; Lang et al, ; Struss, Blisniuk, Brandes, et al, ; Struss, Brandes, Blisniuk, et al, ; Struss, Brandes, Vandré, et al, ; Winsemann, ), seismic data (Stephens, ) and basin modeling (Struss et al, ).…”

Section: Basin Systems Of the Southern Central American Island Arcmentioning

confidence: 99%

From incipient island arc to doubly‐vergent orogen: A review of geodynamic models and sedimentary basin‐fills of southern Central America

Brandes

Winsemann

2018

Island Arc

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Southern Central America is a Late Mesozoic/Cenozoic island arc that evolved in response to the subduction of the Farallón Plate beneath the Caribbean Plate in the Late Cretaceous and, from the Oligocene, the Cocos and Nazca Plates. Southern Central America is one of the best studied convergent margins in the world. The aim of this paper is to review the sedimentary and structural evolution of arc‐related sedimentary basins in southern Central America, and to show how the arc developed from a pre‐extensional intra‐oceanic island arc into a doubly‐vergent, subduction orogen. The Cenozoic sedimentary history of southern Central America is placed into the plate tectonic context of existing Caribbean Plate models. From regional basin analysis, the evolution of the southern Central American island arc is subdivided into three phases: (i) non‐extensional stage during the Campanian; (ii) extensional phase during the Maastrichtian‐Oligocene with rapid basin subsidence and deposition of arc‐related, clastic sediments; and (iii) doubly‐vergent, compressional arc phase along the 280 km long southern Costa Rican arc segment related to either oblique subduction of the Nazca plate, west‐to‐east passage of the Nazca–Cocos–Caribbean triple junction, or the subduction of rough oceanic crust of the Cocos Plate. The Pleistocene subduction of the Cocos Ridge contributed to the contraction but was not the primary driver. The architecture of the arc‐related sedimentary basin‐fills has been controlled by four factors: (i) subsidence caused by tectonic mechanisms, linked to the angle and morphology of the incoming plate, as shown by the fact that subduction of aseismic ridges and slab segments with rough crust were important drivers for subduction erosion, controlling the shape of forearc and trench‐slope basins, the lifespan of sedimentary basins, and the subsidence and uplift patterns; (ii) subsidence caused by slab rollback and resulting trench retreat; (iii) eustatic sea‐level changes; and (iv) sediment dispersal systems.

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“…Forearc basins may record a decrease or interruption in the supply of arcderived material when they are located inboard of volcanic arc gaps (Ballance et al, 1989). Whether they become accreted or subducted, colliding features may leave a distinct uplift pattern in the evolution of forearc basins, with a total surface uplift generally comprised between 1 and 3 km (Meffre & Crawford, 2001;Andji c et al, 2016Andji c et al, , 2018 as solid evidence of past episodes of rough crust subduction associated with volcanic activity cessation. Besides the Costa Rican type examples discussed above and in the literature (Table 1), two other sites may represent archetypal examples of collision recorded in the forearc sedimentary record.…”

Section: Formation Of Arc Gaps and Forearc Upliftmentioning

confidence: 99%

Rapid vertical motions and formation of volcanic arc gaps: Plateau collision recorded in the forearc geological evolution (Costa Rica margin)

2018

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The collision of bathymetric features with modern convergent margins has been investigated with the full range of tools used in geosciences. Hence, a comprehensive picture exists of the characteristic effects of collision events on the evolution of convergent margins. In contrast, much less studies documented past collisions of bathymetric features with convergent margins, as colliding features were generally lost to subduction. The arc-trench system of southern Central America provides modern and past textbook examples of active margin interaction with incoming bathymetric reliefs. Here, we propose a synthesis which combines basin and terrane analysis of the forearc of northern Costa Rica and takes up the challenge of documenting past episodes of plateau accretion to the active margin. As illustrated in modern examples, our study shows that kilometric uplift of the overriding plate and termination of the volcanic arc activity are the most profound effects of colliding/accreting oceanic plateaus. Kilometric uplift of the forearc is documented by short-lived (ca. 3 m.y.) occurrences of shallow-water deposits in an overall deep-water forearc record. These shallow deposits contain material reworked from underlying sedimentary and basement lithologies. The development of spatial gaps in arc volcanism is deduced from the transition from arcderived turbidites to pelagic sediments. Eventually, end of the collision event is evidenced by the subsidence of the whole forearc to deep-water environments.Basin subsidence is accompanied or followed by renewed volcanic arc activity and coeval arc-derived sedimentation, which may occur 1-7 m.y. after plateau collision. These past episodes of plateau accretion are archetypal for the following reasons: (a) they may be studied in outcrop, whereas most of the modern collisions of plateaus largely occur underwater; (b) no tectonic or metamorphic imprint has significantly complicated the forearc geological record; (c) the colliding feature and the sedimentary response to its collision are both preserved in the forearc geology; (d) they may be used as analogues for any setting where a bathymetric feature is suspected to have caused rapid forearc uplift and cessation of the volcanic arc activity.---

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An upper Paleogene shallowing-upward sequence in the southern Sandino Forearc Basin (NW Costa Rica): response to tectonic uplift

Cited by 7 publications

References 75 publications

Tectono‐stratigraphic response of the Sandino Forearc Basin (N‐Costa Rica and W‐Nicaragua) to episodes of rough crust and oblique subduction

Tectono‐stratigraphic response of the Sandino Forearc Basin (N‐Costa Rica and W‐Nicaragua) to episodes of rough crust and oblique subduction

From incipient island arc to doubly‐vergent orogen: A review of geodynamic models and sedimentary basin‐fills of southern Central America

Rapid vertical motions and formation of volcanic arc gaps: Plateau collision recorded in the forearc geological evolution (Costa Rica margin)

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