Environmental persistence, bioaccumulation, and ecotoxicology of heavy metals

Chemistry and Ecology, Journal Year: 2024, Volume and Issue: 40(3), P. 322 - 349

Published: Jan. 22, 2024

Heavy metals, pervasive in the environment due to natural processes and human activities, pose substantial threats ecosystems health. This study aims delve into sources, contamination pathways waters, subsequent bioaccumulation of heavy metals across various organisms. The overview encompasses an exploration environmental persistence, dynamics, ecotoxicological impacts these metals. Methodologically, this research undertakes a comprehensive review synthesizing existing literature studies on metal contamination, mechanisms, ecotoxicity. Key findings highlight protracted persistence perpetuating significant ecological balance well-being. Notably, transfer through food chains culminates their diverse organisms, raising concerns about potential toxicity, including exposure. discussion underscores imperative nature assessing pollution its ramifications Emphasizing essential role bioindicators biomarkers, article elucidates significance evaluating metal-induced stressors impact both biota populations. contributes nuanced understanding advocating for proactive measures monitoring mitigating deleterious effects

Language: Английский

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Sensitivity ecology and evolution, toxicology organism assessment model in the use of chemical applications for the management of toxic substances

Deleted Journal, Journal Year: 2024, Volume and Issue: 44(5), P. 890 - 908

Published: June 22, 2024

The sensitivity of organisms to toxic substances is a pivotal facet in ecological and toxicological research. Understanding differential sensitivity's basis its evolutionary underpinnings imperative for anticipating managing the repercussions toxins on organisms. Our comprehensive analysis reveals that physiological traits, encompassing metabolic capacity, membrane transporters, wield significant influence determining organism toxins. Evolutionary processes, including natural selection genetic variations also contribute tolerance or resistance substances. This review focuses existing research concerning sensitivity, particularly emphasizing toxicokinetics, toxicodynamics, factors underlie Furthermore, it explores practical applications predictive ecotoxicology chemical management identifies promising prospects models. integration these insights into development application can usher era effective environmentally benign chemicals, thereby curtailing impacts fostering harmonious coexistence between their surroundings.

Language: Английский

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Cretaceous extensional and contractional stages in the Colombian Andes unraveled by a source-to-sink geochronological and thermochronological study in the Upper Magdalena Basin

Tectonophysics, Journal Year: 2024, Volume and Issue: 878, P. 230303 - 230303

Published: April 4, 2024

Extensional and flexural basins can evolve through multiple stages under the same plate tectonic regime over tens of millions years. The Cretaceous evolution Colombian Andes is characterized by shifts between contractional extensional tectonics. upper response to these changes recorded in sedimentary rocks along Western, Central, Eastern cordilleras, their adjacent basins, including Upper Magdalena hinterland basin. We integrated field observations, petrography, geochronology, thermochronology units southern Basin crystalline basement decipher provenance exhumation patterns source areas. These results suggest that areas were exhumed Late Jurassic Early Cretaceous, which may have resulted from combination contraction extension. Between ∼120 100 Ma, a major stage crustal extension Caballos Formation. Subsequently, ∼100 80 sedimentation Villeta Group marks end onset contraction. This phase was minor rock uplift within modification continued 65 involving two successive changed patterns, leading burial previously horst block appearance new systems are result deformation episodes during prolonged phases. geologic highlights characterize settings.

Language: Английский

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The Role of Transpressional Tectonics, Volcanism, and Fluvial Processes on the Oligocene to Pliocene Evolution of Intermontane Basins of the Western Colombian Andes

Tectonics, Journal Year: 2025, Volume and Issue: 44(3)

Published: March 1, 2025

Abstract We use new and published detrital zircon U‐Pb data ( n > 10,000) from Oligocene‐Pliocene strata of intermontane basins the western Colombian Andes surrounding regions to study evolution sedimentary systems during transition arc collision/accretion subduction. Our database indicates a shift compartmentalized basin architecture, locally fed by transverse drainages, toward one with enhanced connectivity longitudinal sediment dispersal Middle‐Late Miocene. These events were accompanied end local marine influence on depocenters progressive uplift flanking Cordilleras as they became continuous topographic features. Post‐Pliocene transient disruption rivers was caused damming valley‐filling, attributed volcaniclastic flows. interpret inherent segmentation strike‐slip faults their morphological expressions primary controls depocenter Early‐Middle Miocene collision/accretion. The subsequent subduction tectonic continental margin triggered asymmetrical inversion in Andes. modern rugged morphology northern region is arguably associated widespread due upper plate cooling strengthening shallow Coiba microplate. Conversely, wide flat aggradational southern area interpreted result incomplete dominance tectonics. “normal” Malpelo microplate beneath Colombia might be linked higher heat flow localized deformation intra‐ back‐arc regions.

Language: Английский

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Erosion rate maps highlight spatio-temporal patterns of uplift and quantify sediment export of the Northern Andes

Earth and Planetary Science Letters, Journal Year: 2023, Volume and Issue: 621, P. 118354 - 118354

Published: Sept. 15, 2023

Erosion rates are widely used to assess tectonic uplift and sediment export from mountain ranges. However, the scarcity of erosion rate measurements often hinders detailed interpretations. Here, we present 25 new cosmogenic nuclide-derived Northern Andes Colombia study spatio-temporal patterns along Central Eastern Cordillera. Specifically, combine published data with precipitation-corrected normalized channel steepness construct high-resolution maps. We find that in southern Cordillera relatively uniform average ∼0.3 mm/a. In northern rapidly eroding canyons dissect slowly eroding, low-relief surfaces uplifting since 8.3−2.6+3.7 Ma, based on a block model. interpret persistent steep slab subduction has led an erosional steady-state Cordillera, whereas Late Miocene flattening caused acceleration uplift, which landscape not yet equilibrated. The also displays pronounced disequilibrium, central plateau rimmed by faster western eastern flanks. Our maps suggest topographic growth deformation focused flank, is supported balanced cross-sections thermochronologic data. Spatial gradients predicted flank transient basin-ward migration thrusts. Finally, fluxes our maps, exports nearly four times more than analysis shows accounting for spatial variations parameters climate reveals important forcing would otherwise be obscured traditional river profile analyses. Moreover, given relationships between evolution, hypothesize dip primary driver dynamic evolution Andes, potentially superposed effects inherited Mesozoic rift structures.

Language: Английский

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Fracture evaluation of the plutonic basement in the Upper Magdalena Basin: Implications for the development of naturally fractured reservoirs in the Northern Andes

Geological Journal, Journal Year: 2024, Volume and Issue: 59(7), P. 1968 - 1997

Published: May 27, 2024

Plutonic rocks typically have negligible matrix porosity and permeability. However, fractures mineral alterations create storage space flow pathways that turn plutonic into fluid reservoirs. Despite significant hydrocarbon discoveries, naturally fractured reservoirs in been poorly studied. In most Colombian basins, the crystalline basement has undergone multiple deformational events is thrust over Cretaceous to Cenozoic source reservoir of conventional petroleum system. This structural configuration ideal for migration oil a basement. A multiscale fracture analysis, including field, petrographical petrophysical techniques was conducted on Permian Jurassic Upper Magdalena Basin order understand controls brittle deformation, development networks their potential form The results indicate protolith textures structures, magmatic mylonitic foliation, favours fracturing. Dykes exhibit higher density (7–48 fractures/m), (mean = 0.4%) permeability 125,818.75 mD) than host rock (2–25 fractures/m; 0.23%; 12,066.09 mD). Intersection zones from regional faults, are characterized by highest lineament intensity. Our suggest dyke swarms interacting damage can significantly enhance quality providing rock.

Language: Английский

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Fracture analysis and low-temperature thermochronology of faulted Jurassic igneous rocks in the Southern Colombian Andes: Reservoir and tectonic implications

Marine and Petroleum Geology, Journal Year: 2024, Volume and Issue: 165, P. 106850 - 106850

Published: April 20, 2024

Fractured basement hydrocarbon reservoirs are widely distributed worldwide in more than 30 basins, where volcanic and plutonic rocks have produced significant quantities of oil gas. The Upper Magdalena Valley Basin (UMVB) is a mature productive basin located the Colombian Andes. In this basin, volcaniclastic Jurassic thrusted on top Cretaceous to Cenozoic sedimentary rocks, which constitute petroleum system. Multi-scale fracture analysis together with petrography, petrophysics, low-temperature thermochronology were conducted outcrop analogue assess structural evolution investigate main factors controlling development properties igneous basements. Thermochronological data indicate occurrence three exhumation events between Early Miocene, suggesting that most networks within Agrado-Betania hanging-wall likely formed before migration. Structural has identified fault damage zone width approximately 746 meters. Volcanic breccias ash tuffs exhibit slightly higher areal intensities (P21>30m/m2) compared clastic (P21<20m/m2). Furthermore, good connectivity, connection per branch (CB) values exceeding 1.5 percolation threshold. Petrophysical calculations matrix-fracture high permeabilities (ranging from 1000mD 10000000mD) low porosities (<10%). position diagenetic transformation primary intensity fault. Results also show polyphasic histories burial history positively influence quality fractured reservoirs.

Language: Английский

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Repeated Structural Reworking in the Basement of the Central Colombian Andes Unraveled by a Multi‐Chronometric Approach

Tectonics, Journal Year: 2024, Volume and Issue: 43(10)

Published: Oct. 1, 2024

Abstract Long‐lived orogens are often characterized by basement blocks affected polyphase thick‐skinned deformation. Deciphering these events is challenging due to the heterogeneous and complex structural histories resulting from superposition of multiple deformation phases. For instance, Central Cordillera Colombia was shaped tectonic phases during Mesozoic Cenozoic, which have been poorly constrained in both space time. To unravel history this mountain belt, we conducted field mapping applied a multi‐chronometric approach that included zircon apatite U‐Pb dating igneous basement, epidote titanite structurally controlled mineralization events, K‐Ar fault rock illite, fission track (U‐Th‐Sm)/He bedrock thermochronology zircon. The results reveal six along two systems past 184 Myr. This started Jurassic with magmatism ductile deformation; followed brittle‐ductile fluid‐assisted basin subsidence inversion Cretaceous. Finally, Cenozoic brittle strike‐slip compressional Our findings show response reworking, highlighting prominent role ancient upper‐plate discontinuities, magmatism, fluids.

Language: Английский

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Sediment provenance signal of the discontinuous retroarc topography in the northern Andes during the Early Cretaceous

Terra Nova, Journal Year: 2023, Volume and Issue: 35(5), P. 440 - 449

Published: June 9, 2023

Abstract A large dataset of detrital zircon U–Pb ages ( N = 5940) Aptian‐Albian strata the Colombian‐Ecuadorian retroarc region suggests that these rocks were sourced from Proterozoic cratonic and Permian–Triassic to Cretaceous Andean proto‐Cordilleras. The nonconformity between Garzón Massif indicates existence positive relief in this region. Topographic highs could have caused local basin compartmentalization prevalence a localized provenance coeval strata. Areas seemingly exposed intense chemical weathering as suggested by high Chemical Index Alteration values, low Rb/Sr SiO 2 /Al O 3 ratios analysed Our results highlight value analysis study ancient topography systems open avenue for further research on role extensional tectonics topographic evolution Andes.

Language: Английский

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Miocene Paleogeography of NW Colombia: A review of the sedimentary and magmatic evolution of the Amagá Basin a century after Grosse’s work

Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales, Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 3, 2023

In 1918, the geologist Emile Grosse was commissioned to conduct geological studies in Amagá Basin, Antioquia, Colombia. 1923, finished a comprehensive cartographic work that became cornerstone for geology of northwest (NW) Colombian Andes. Today, 100 years later, volcanoclastic strata preserved Basin are crucial understanding major Oligocene Pliocene tectonic events occurred NW South-American margin, including fragmentation Nazca Plate, collision Panamá-Chocó Block, and shallowing subducted slab. Our contribution includes new mineral chemistry zircon petrochronological data from Combia Volcanic Complex published provide review deformation, sedimentation, magmatic patterns their implications evolution South America. The result Eocene uplift Western Cordillera followed by Middle Miocene both Central cordilleras, modified drainage network Northern Coeval with final deformation phases basin, magmatism subduction magmas emplaced continental crust affected strike-slip tectonics.

Language: Английский

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