Detrital-zircon geochronology and provenance of the Ocloyic synorogenic clastic wedge, and Ordovician accretion of the Argentine Precordillera terrane

The Precordillera terrane in northwestern Argentina is interpreted to be anexotic (Laurentian) continental fragment that was accreted to western Gondwanaduring the Ordovician. One prominent manifestation of the subductionand collision process is a Middle?Upper Ordovician clastic wedge, which overliesa passive-margin carbonate-platform succession in the Precordillera. U/Pbages of detrital zircons from sandstones within the clastic wedge, as well as zirconsfrom clasts within conglomerates, provide documentation for the compositionof the sediment provenance. The ages of detrital zircons are consistentvertically through the succession, as well as laterally along and across strike ofthe Precordillera, indicating a single, persistent sediment source throughoutdeposition of the clastic wedge. The dominant mode (~1350?1000 Ma) of thedetrital-zircon ages corresponds to the ages of basement rocks in the WesternSierras Pampeanas along the eastern side of the Precordillera. A secondarymode (1500?1350 Ma) corresponds in age to the Granite-Rhyolite province ofLaurentia, an age range which is not known in ages of basement rocks of theWestern Sierras Pampeanas; however, detritus from Granite-Rhyolite-age rocksin the basement of the Precordillera was available through recycling of synriftand passive-margin cover strata. Igneous clasts in the conglomerates haveages (647?614 Ma) that correspond to the ages of minor synrift igneous rocks inthe nearby basement massifs; the same ages are represented in a minor mode(~750?570 Ma) of detrital-zircon ages. A quartzite clast in a conglomerate, aswell as parts of the population of detrital zircons, indicates the importanceof a source in the metasedimentary cover of the leading edge of the Precordillera.The Famatina continental-margin magmatic arc reflects pre-collisionsubduction of Precordillera lithosphere beneath the western Gondwana margin;however, no detrital zircons have ages that correspond to Famatina arcmagmatism, indicating that sedimentary detritus from the arc may have beentrapped in a forearc basin and did not reach the foreland. The indicators ofsedimentary provenance for the foreland deposits are consistent with subductionof the Precordillera beneath western Gondwana, imbrication of basementrocks from either the Precordillera or Gondwana into an accretionary complex,and recycling of deformed Precordillera cover rocks.Fil: Thomas, William A.. Geological Survey of Alabama; Estados UnidosFil: Astini, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Mueller, Paul A.. Florida State University; Estados UnidosFil: McClelland, William C.. University of Iowa; Estados Unido

Hubungan Pola Asuh Orangtua Terhadap Minat Baca Siswa-siswa Berprestasi Smk Sakti Gemolong Kabupaten Sragen

Skripsi ini membahas mengenai “Hubungan Pola Asuh Orangtua terhadap Minat Baca Siswa-Siswa Berprestasi Kelas XI SMK Sakti Gemolong Kabupaten Sragen”. Pola asuh orang tua adalah alat yang digunakan oleh orang tua untuk menanamkan minat baca pada siswa-siswa ini dalam keluarga. Tujuan dari penelitian adalah untuk mendeskripsikan kondisi minat baca siswa-siswa berprestasi kelas XI SMK Sakti Gemolong dan bagaimana hubungan pola asuh orang tua dalam terbentuknya minat baca.Penelitian ini akan menjawab tiga pertanyaan yaitu pertama bagaimana deskripsi hubungan pola asuh orang tua terhadap pengembangan minat baca siswa kelas XI SMK Sakti Gemolong. Kedua bagaimana deskripsi hubungan minat baca terhadap prestasi belajar siswa. Ketiga faktor lain apakah selain pola asuh orang tua yang mempengaruhi minat baca dan prestasi belajar siswa di sekolah.Metode yang digunakan dalam penelitian ini adalah deskriptif kualitatif. Dengan teknik pengumpulan data dari hasil wawancara terhadap empat orang siswa berserta orangtuanya dan dua orang informan tambahan sebagai pelengkap data. Pemilihan sampel menggunakan metode snow balling.Simpulan penelitian ini adalah prestasi belajar ditentukan oleh minat baca siswa, sementara minat baca dibangun oleh pola asuh orangtua kepada anak ketika di rumah. Minat baca anak akan terpupuk apabila orangtua tidak memberikan teladan dengan cara aktif membaca dan meluangkan waktu khusus untuk membaca setiap harinya di rumah. Berawal dari kebiasaan anak akan dengan sendirinya membaca. Anak yang demikian akan memiliki prestasi belajar baik di sekolah

The Clinical Information System That Effects The Patients' Satisfaction Of The Healthcare Services

This research intends to understand and investigate how to increase patients' satisfaction by implementing the clinical information system and by looking at the service quality, green environment, and patients' perceptions to provide better patient satisfaction concerning healthcare services. The data collection is done through the distribution of questionnaires in Jakarta, Indonesia. This research is based on descriptive and verification methods; the sample is determined through Purposive Sampling, and the method analysis technique is Partial Least Square (PLS). The research results show that patients' perception significantly influences clinical system information compared to quality services and a green environment to achieve patient satisfaction. Healthcare clinics need to implement the clinical system information to assist the healthcare workers in providing quality patient services

First documentation of the Polygnathoides siluricus conodont Zone (Ludfordian) in South America (Argentina) and the stratigraphic significance of the younger species of Kockelella (Conodonta)

The coquinoid beds from the middle part of the Los Espejos Formation at the Poblete creek section (Talacasto Creek) yielded abundant conodonts. The genus Kockelella (Walliser) represents the most relevant biostratigraphical genus in this conodont fauna. The co-occurrence of Kockelella maenniki Serpagli and Corradini, Kockelella variabilis ichnusae Serpagli and Corradini, K. variabilis Walliser, Kockelella ortus sardoa (Serpagli & Corradini), and Kockelella ortus absidata (Barrick & Klapper) allow us to record for the first time the Polygnathoides siluricus Zone in South America, which suggests the Ludfordian Stage (late Ludlow). We also propose an accurate correlation of the Los Espejos Formation with the lower Ludfordian deposits from the Carnic Alps, Sardinia, Morocco, Czech Republic, Gotland, and North America.Fil: Gomez, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Mestre, Ana Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Garcias Paez, Yanina Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Corradini, Carlo. Università degli Studi di Cagliari; Itali

Pengaruh Persepsi Life Style dan Media Social Networking terhadap Kepuasan Konsumen dan Keputusan Perpindahan Merek pada Telepon Selular ke Blackberry

Penelitian ini membahas apakah Life Style dan media Social Networking mempengaruhi kepuasan konsumen sehingga dampaknya menjadi keputusan konsumen untuk berpindah merek. Ketidakpuasan konsumen terjadi apabila kinerja suatu produk tidak sesuai dengan persepsi dan harapan konsumen. Kepuasan merupakan fungsi dari persepsi atau kesan atas kinerja dan harapan. Jika kinerja berada di bawah harapan maka pelanggan merasa tidak puas. Kepuasan dan ketidakpuasan konsumen dipengaruhi oleh pengalaman mengkonsumsi produk atau jasa sebelumnya. Penelitian ini adalah penelitian deskriptif-kuantitatif. Dengan teknik judgmental sampling diperoleh total sampel sebanyak 219 kuesioner termasuk 30 kuesioner yang berpartisipasi dalam pre-test. Data diuji menggunakan structural equation model. Hasil penelitian ini menunjukkan bahwa hanya Life Style yang berpengaruh positif terhadap kepuasan, sementara media Social Networking tidak. Kepuasan konsumen memiliki pengaruh yang positif terhadap perpindahan merek. Penelitian ini juga menemukan bahwa Life Style berpengaruh positif terhadap perpindahan merek, namun media Social Networking tidak berpengaruh terhadap perpindahan merek

Large mediastinal nodular ganglioneuroblastoma in a child from Africa.

Ganglioneuroblastoma, nodular (GNBn) is a subtype of neuroblastic tumors. This is a rare malignancy typically affecting young children. Few cases are reported in adolescents and adults. The prognosis is related to the surgical excision radicality. Hereby we present a case of a young male patient age 13 from the Horn of Africa presenting with vague symptoms of fatigue and weight loss. Chest X-ray showed a large radiopaque mass occupying the right thorax. The chest Computed Tomograpy confirmed the presence of an 18-cm large mass originating from the posterior mediastinum and invading most of the right hemi-thorax. Surgical excision and histopathology study of the lesion clarified its rare nature: ganglioneuroblastoma nodular with a particular coexistence of a fibrous benign surface encapsulating a necrotic malignant core. In this case of large GNBn in a young adolescent, the surgical resection alone played a curative treatment role

Sr, C and O isotope geochemistry and stratigraphy of Precambrian and lower Paleozoic carbonate sequences from the Western Sierras Pampeanas of Argentina: tectonic implications

Sr, C and O isotope data are presented for carbonate rocks from the Sierra de Pie de Palo and other crystalline outcrops of the Western Sierras Pampeanas. These are used to distinguish three groups of rocks of quite different ages within the nappe pile that constitutes the Sierra de Pie de Palo. Carbonates from the Grenville-age ophiolitic unit at the bottom of the pile probably resulted from the interaction between hot seawater and contemporaneous oceanic crust. These carbonates are tentatively classified as ophicalcites. Carbonates from the Difunta Correa Sedimentary Sequence are part of a cover sequence to a Grenvillian basement, together forming the upper nappes. Isotope stratigraphy suggests a middle to Late Neoproterozoic age (580–720 Ma) for these carbonates. This cover might be correlated with cover sequences to the Archean and Early to Middle Proterozoic cratons that are well preserved over large areas of Brazil. This fact, together with the apparently absence of an equivalent Neoproterozoic carbonate-bearing cover in the Appalachian margin of Laurentia, suggests that the Western Sierras Pampeanas, which are considered part of the exotic Argentine Precordillera terrane of allegedly Laurentian derivation, could be autochthonous or para-autochthonous to Gondwana. Other geochemical and geological arguments reinforce this hypothesis. The Caucete Group carbonates underlie the nappe pile and are separated from it by a first order thrust (the Pirquitas thrust). These latter carbonates are Cambrian in age and isotopically similar to the carbonate platform of the Precordillera.We thus conclude that the Pirquitas thrust is the boundary between the exotic Precordillera terrane and the autochthonous or para-autochthonousWestern Sierras Pampeanas