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27 results for “suture zone”
Fig. 4 Acanthochaetetes fischeri n in Acanthochaetetes Fischeri N. Sp. (Coralline Demosponge) From The Upper Paleocene (Thanetian) Of Iraq (Kurdistan Region) And Iran (Sistan Suture Zone)
Fig. 4 Acanthochaetetes fischeri n. sp. from the upper Paleocene of northeastern Iraq. a Longitudinal (left) and cross (right) sections. Note the thick double walls (black arrows). Thin-section 18. b–c cross sections, where spines inside calicles (black arrows) and thick double walls (white arrows in c) can be seen. Thin-sections 24 and 17. d Oblique section, showing scarce tabulae (black arrows). Thin-section 17. e Cross section. Note the round/oval to elliptical shape of calicles, as well as two fissiparous division processes (black arrows). Thin-section 24. f Longitudinal section, where tabulae (black arrows) and subsequent fissiparous division processes (grey arrows) can be observed. Thin-section 17. g Cross-to-oblique section, showing massive thickenings (square; common for all Acanthochaetetidae; compare Reitner, 1991; Sánchez-Beristain et al., 2019, 2021). Thin-section 16. h Oblique section, with abundant lamellae (black arrows), common for all Acanthochaetetidae (compare Reitner, 1991). Thin-section 24. i Cross-oblique section, showing round to elliptical shape of calicles, as well as multiple lamellae (right side of the picture). See text and table 1 for further details. Thin-section 24.
Fig. 3. Acanthochaetetes fischeri n in Acanthochaetetes Fischeri N. Sp. (Coralline Demosponge) From The Upper Paleocene (Thanetian) Of Iraq (Kurdistan Region) And Iran (Sistan Suture Zone)
Fig. 3. Acanthochaetetes fischeri n. sp. from the upper Paleocene of eastern Iran (a–b) and northeastern Iraq (c–f). a Longitudinal section, showing notable walls (yellow arrows) and tabulae (black arrows), the latter occurring seldom. Thin-section 2pz 93. b Longitudinal section, with spines within calicles, diagnostic for the genus Acanthochaetetes Fischer (yellow arrows). Spines in only one calicle are shown. Note also the huge intertabular space (between red arrows), measuring> 2 mm as a rule. In addition, thick double walls, diagnostic for A. fischeri n. sp. can be seen (black arrows). A fissiparous division process (black square) is highlighted. Thin-section 2pz 95. c–e Oblique section, where the high density of calicles/mm2 (1.5 to 2.5) can be confirmed. This trait can also be seen in d and e especially in the marked areas (squares). Thin-sections 24, 15, and 14. f Cross section, showing the remarkably thick double walls (red arrows), which can attain up to 0.3 mm. See text and table 1 for further details. Thin-section 26. Abbreviations: mb= macroboring (e.g. Gastrochaenolites-type), tb = tubulae.
Fig. 2 in Acanthochaetetes Fischeri N. Sp. (Coralline Demosponge) From The Upper Paleocene (Thanetian) Of Iraq (Kurdistan Region) And Iran (Sistan Suture Zone)
Fig. 2 Type-locality of Acanthochaetetes fischeri n. sp. in northern Sulaymaniyah Governorate, Iraq. a Location of the Nawar section close to Darbandikhan Lake (from google Earth). b Geological map showing the distribution of the Kolosh Formation. c Location of the type-locality of Acanthochaetetes fischeri n. sp. in northeastern Iraq close to the border to Iran.
Fig. 1 a-b in Acanthochaetetes Fischeri N. Sp. (Coralline Demosponge) From The Upper Paleocene (Thanetian) Of Iraq (Kurdistan Region) And Iran (Sistan Suture Zone)
Fig. 1 a-b Acanthochetetes sp. from a lower Albian hardground (base of Meruelo Formation) of Cape Ajo, Cantabria, N Spain. A. = Acanthochaetetes, s = serpulid tube, s.p. = siliceous sponge, e.f. = encrusting foraminifera. Scale bars = 1.0 mm. c-d Bioclastic packstone (upper slope facies) with Acanthochaetetes fischeri n. sp. from the upper Paleocene of eastern Iran; thin-sections 2pz 95 and BN 89. Scale bars 1.0 mm(a-b), 0.9 mm (c) and 0.6 mm (d).
Suturing fragmented landscapes: Mosaic hybrid zones in plants may facilitate landscape restoration
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Supplemental data files for: Magnetotelluric data reveals subduction polarity and reactivation of the Mudanjiang suture zone, Northeast China
<p>Data files for a 3-D electrical resistivity model in the Mudanjiang suture zone area, including the observed MT data (the data format is for 3-D inversion using ModEM), and the preferred resistivity model.</p>
EGFs, gravity and crustal models data around the Solonker suture zone in NE China
<p>The observed EGFs, complete Bouguer gravity anomalies data and the 3-D crustal Vs and density models from our joint inversion around the Solonker suture zone in NE China.</p>
Geochemical Results of Mafic Blocks in Southern Ophiolitic Mélange in Luqu (Xigaze) Ophiolite from Yarlung-Tsangpo Suture Zone, Southern Tibet
<p><strong>Table S1</strong> Basic information of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S2</strong> Major and trace element compositions of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S3</strong> Sr-Nd-Hf isotope results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S4</strong> Clinopyroxene EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S5</strong> Clinopyroxene Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S6</strong> Amphibole EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S7</strong> Amphibole Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S8</strong> Plagioclase EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S9</strong> Zircon SIMS U-Pb dating results of mafic rocks from southern Luqu mélange</p> <p><strong>Table S10 </strong>Zircon Hf-O isotopes of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S1</strong> Basic information of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S2</strong> Major and trace element compositions of mafic rocks of southern ophiolitic mélange from Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S3</strong> Sr-Nd-Hf isotope results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S4</strong> Clinopyroxene EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S5</strong> Clinopyroxene Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S6</strong> Amphibole EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S7</strong> Amphibole Laser Ablation-ICPMS results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S8</strong> Plagioclase EPMA results of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p> <p><strong>Table S9</strong> Zircon SIMS U-Pb dating results of mafic rocks from southern Luqu mélange</p> <p><strong>Table S10 </strong>Zircon Hf-O isotopes of mafic rocks from southern ophiolitic mélange of Luqu section of the Xigaze ophiolite, YTSZ</p>
Alaska Range Suture Zone Compiled Geochronology data set
<p>Geochronology data set for the manuscript, <strong><em>Upper-plate Controls on Slab Geometry, Melt Ponding, and Structurally Compelled Localized Alaska Range Suture Zone Arc Magmatism Since ca. 100 Ma, </em></strong> submitted to <em>Tectonics and seismicity of Alaska and Western Canada: Earthscope and beyond</em>."</p>
Paleomagnetic constraint on the Age of the Shyok Suture Zone
<p class="Text">The India-Eurasia collision is a key case study for understanding the influence of plate tectonic processes on Earth's crust, atmosphere, hydrosphere and biosphere. However, the timing of the final India-Eurasia continental collision is debated due to significant uncertainty in the age of the collision between the Kohistan-Ladakh arc and Eurasia along the Shyok suture zone. Here we present paleomagnetic results that constrain the Karakoram terrane in northwest India to a paleolatitude of 19.9 ± 8.9 °N between 93 – 75 million years ago (Ma). Our results show that the Karakoram terrane was situated on the southern margin of Eurasia in the Late Cretaceous. Our results indicate that the Kohistan-Ladakh arc and Eurasian continent had not converged until < 61.6 Ma, placing a Paleocene older limit on the age of final closure of the Shyok suture zone. This suggests that the India-Eurasia collision in northwestern India likely occurred after the closure of the oceanic basin between the Kohistan-Ladakh arc and Eurasia. The Paleocene collision event affecting India that has been widely interpreted to represent the final India-Eurasia collision instead records the arc-continent collision between the Kohistan-Ladakh arc and the northern edge of India prior to the final India-Eurasia collision. The final India-Eurasia collision in northwest India most likely occurred after the closure of the oceanic basin between the Kohistan-Ladakh arc and Eurasia.</p>
Paleomagnetic constraint on the Age of the Shyok Suture Zone
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Data from: Phylogeography of sand-burrowing amphipods (Haustoriidae) supports an ancient suture zone in the Gulf of Mexico
AIM: To evaluate the impact of a proposed ancient suture zone in the Gulf of Mexico on the distribution and molecular diversity of dispersal-limited, sand-burrowing amphipods of the genera Haustorius and Lepidactylus (Haustoriidae: Amphipoda). LOCATION: Gulf of Mexico, U.S.A. and Mexico. METHODS: Phylogenetic and population genetic analyses were performed using mitochondrial (COI and 16S) and nuclear (18S and 28S) data from 93 amphipod individuals from 16 sites across the Gulf of Mexico. Bayesian and ML phylogenies were constructed for all genes, divergence times were estimated using a molecular clock for COI (0.007–0.013 subs./site per My), and four species delimitation methods were used to identify operational taxonomic units (OTUs) within each amphipod species. The mitochondrial COI gene was used to construct haplotype networks and estimate population genetic parameters to evaluate historical changes in effective population sizes. RESULTS: Deep divergences (most estimated to be >4 Mya) were uncovered between sister clades of both amphipod genera on either side of the Mississippi River as well as within Lepidactylus triarticulatus where each sample site was found to harbor a unique genetic lineage. Two cryptic OTUs of L. triarticulatus were identified living sympatrically at Pass Christian, Mississippi. Two distinct OTUs representing western and eastern Haustorius galvezi clades were identified along the Texas and Mexico coastlines with abutting ranges. Population genetic results show some support for recent population expansions for western Gulf OTUs, while eastern Gulf OTUs may have suffered population bottlenecks in the past. MAIN CONCLUSIONS: Divergences between sister species of sand-burrowing amphipods exceeds the timing of previous vicariant hypotheses. The split appears to be consistent with Miocene sedimentation levels from the Mississippi River acting as an east-west barrier to gene flow in the Gulf of Mexico. Given their strong population structure and cryptic diversity, haustoriid amphipods are ideal model organisms for studying open coast biogeography.
Data from: Hybridization between Townsend's Dendroica townsendi and black-throated green warblers D. virens in an avian suture zone
Hybrid zones between species provide natural systems for the study of processes involved in divergence, reproductive isolation and speciation. Townsend's Dendroica townsendi and black-throated green D. virens warblers are phenotypically and genetically divergent groups that occur in western and eastern North America respectively, with potential for range contact in the Rocky Mountains of British Columbia, where other west-east avian pairs come into contact. Although one potential hybrid (a phenotypic Townsend's warbler with the black-throated green mitochondrial DNA) has been previously reported, there have been no studies of interactions between the taxa in potential areas of sympatry. To determine whether interbreeding between these species is a regular occurrence we examined variation in individuals across the area of putative range overlap. Analysis of plumage, morphology, and mitochondrial (COI) and nuclear molecular markers (CHD1Z and numt-Dco1) shows surprisingly extensive hybridization between these species, with at least 38% of individuals in the hybrid zone being either hybrids or backcrosses. Each of the traits displays a sigmoidal cline centred along the eastern slope of the Rocky Mountains (molecular cline centres averaging 50 km east of the crest of the Rockies, ranging from 41 to 56 km). The clines are narrow (average molecular cline width is 60 km, ranging from 40 to 87 km) relative to the dispersal distance of related warbler species, suggesting that selection is maintaining the hybrid zone; we discuss possible sources of selection. Given the narrowness of the zone we recommend the two forms should continue to be treated as separate taxonomic species. Townsend's warblers also form an extensively studied hybrid zone with their more closely related southern relative, the hermit warbler D. occidentalis. The combined system of three discrete forms separated by narrow hybrid zones provides an excellent system for the study of hybridization, reproductive isolation and speciation.
Fore-arc metasomatism by hybrid slab fluids during subduction initiation: Sr–Mg–Ca isotopes of rodingite, western Yarlung Zangbo suture zone
<p> Subduction zone metasomatism is critical for Earth’s material exchanges, yet understanding slab dehydration, particularly deserpentinization beneath fore-arcs, remains challenging. Here, we present Sr–Mg–Ca isotopic data for the Purang rodingites in the western Yarlung-Zangbo suture zone (YZSZ). These rodingites, dominated by amphibolite- to greenschist-facies minerals like tremolite, magnesiohornblende, and chlorite, exhibit cumulate textures and rare earth element patterns resembling troctolites or gabbronorites, presumably formed beneath a seafloor spreading center. The rodingites are enriched in large ion lithophile elements and depleted in high field strength elements. They show higher initial <sup>87</sup>Sr/<sup>86</sup>Sr ratios (0.7067–0.7075) and elevated δ<sup>26</sup>Mg values (–0.22 ± 0.07‰ to –0.13 ± 0.02‰) compared to pristine oceanic basalts, while their δ<sup>44/40</sup>Ca values (0.72 ± 0.02‰ to 0.87 ± 0.03‰) correspond to mid-ocean ridge basalts (MORB). These features imply fore-arc mantle metasomatism of an original MOR-derived protolith at <40 km slab depth, driven by Sr- and Mg-rich fluids from clay-rich sediments and serpentinitized mantle, respectively. The measured Sr and Mg isotope compositions can be reproduced by mixing a MORB-like protolith with hybrid fluids derived from 70–30% clays and 30–70% serpentinites, with a fluid-to-rock ratio of approximately 1:3–1:5. Combined with studies on YZSZ metamorphic soles, we propose this metasomatism occurred during incipient subduction of the Neo-Tethys oceanic rocks. Our studies highlight the significance of deserpentinization at shallow fore-arc mantle settings during subduction initiation and suggest that subducting slabs exhibit more varied dehydration characteristics than previously recognized.</p>
Data from: History cleans up messes: the impact of time in driving divergence and introgression in a tropical suture zone
Contact zones provide an excellent arena in which to address questions about how genomic divergence evolves during lineage divergence. They allow us to both infer patterns of genomic divergence in allopatric populations isolated from introgression and to characterize patterns of introgression after lineages meet. Thusly motivated, we analyze genome-wide introgression data from four contact zones in three genera of lizards endemic to the Australian Wet Tropics. These contact zones all formed between morphologically cryptic lineage-pairs within morphologically defined species, and the lineage-pairs meeting in the contact zones diverged anywhere from 3.1 to 5.8 million years ago. By characterizing patterns of molecular divergence across an average of 11K genes and fitting geographic clines to an average of 7.5K variants, we characterize how patterns of genomic differentiation and introgression change through time. Across this range of divergences, we find that genome-wide differentiation increases but becomes no less heterogeneous. In contrast, we find that introgression heterogeneity decreases dramatically, suggesting that time helps isolated genomes "congeal". Thus, this work emphasizes the pivotal role that history plays in driving lineage divergence.
Supporting dataset for "Magnetotelluric evidence for a Rhyacian suture zone hidden underneath the Seridó belt, Borborema Province, Northeastern Brazil"
<p>This dataset presents .edi files from 47 magnetotelluric stations across the Borborema Province in northeast Brazil. Data collection was financially supported by CNPq projects 501940/2003-0, 573713/2008-1 and 465613/2014-4.</p>
Periosteal Sutures Versus Titanium Tacks for Guided Bone Re-generation in the Aesthetic Zone: a Pilot Randomized Controlled Trial
ClinicalTrials.gov study NCT07330232. IPD Sharing: NO. Countries: 1. Publications: 1.
Data from: Phylogeography and species-limits in the red-shouldered hawk (Buteo lineatus): characterization of the northern Florida suture zone in birds
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Data from: History cleans up messes: the impact of time in driving divergence and introgression in a tropical suture zone
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Data from: Hybridization between Townsend’s Dendroica townsendi and black-throated green warblers D. virens in an avian suture zone
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