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New England and Maritime Canada host two major suites of Mesozoic diabase dykes. The oldest is the Coastal New England dykes that were emplaced between 225 and 230 Ma. These rocks are dominantly alkaline with trace element and isotopic compositions indicative of a high-238 U/ 204 Pb mantle (HIMU) source. The oldest of the -200 Ma Mesozoic rift magmas is represented by the Talcott basalt of the Hartford basin and its feeder dykes. External to the basin is the compositionally equivalent Higganum dyke. The extension of the Higganum, the Onway dyke in New Hampshire, is identical in major and trace element and isotopic compositions indicating that the dyke system represented a feeder to flows of flood basalt proportions. The Talcott system rocks have some trace element similarities with arc basalts and have been interpreted as representing melts of a subduction zone modified mantle beneath the LaurentianGondwanan suture. Incompatible trace element ratios and Ba, Th, and U values are, however, unlike arc basalts and are more indicative of crustal contamination of the primary magma. The coastal New England magmas have oceanic island basalt signatures that are generally thought to represent plume-tail magmatism, which is antithetic to a plume-head origin for the younger eastern North America magmas. However, coastal New England rocks have the same trace element signatures as the alkaline rocks of the Loihi seamount, which represent the pre-shield stage to the voluminous tholeiitic magmatism in Hawaii.Résumé : La Nouvelle-Angleterre et les provinces maritimes canadiennes sont les hôtes de deux suites majeures de dykes de diabase datant du Mésozoïque. La plus ancienne est la suite de dykes de la côte de la Nouvelle-Angleterre; les dykes ont été mis en place il y a 225 à 230 Ma. Ces roches sont surtout alcalines avec des éléments traces et des compositions isotopes indiquent une source HIMU (rapport élevé 238 U/ 204 Pb). Le plus ancien des magmas de rift (~200 Ma, Mésozoïque) est représenté par le basalte Talcott du bassin Hartford et ses filons nourriciers. À l'extérieur du bassin on retrouve le dyke Higgamun de composition équivalente. L'extension du dyke Higganum, le dyke Onway au New Hampshire, est identique en ce qui concerne les compositions des éléments majeurs, des éléments traces et des isotopes, indiquant que le système de dykes représentait un filon nourricier pour des écoulements de basalte à l'échelle de plateaux. Les roches du système Talcott ont des similitudes avec les basaltes d'arc en ce qui concerne les éléments traces; elles représenteraient des fusions d'un manteau modifié d'une zone de subduction sous la suture Laurentia -Gondwana. Les rapports d'éléments traces incompatibles et les valeurs Ba, Th et U sont toutefois peu semblables aux basaltes d'arc et indiquent plus une contamination du magma primaire par la croûte. Les magmas de la côte de la Nouvelle-Angleterre ont des signatures de basaltes d'îles océaniques, lesquels représenteraient un magmatisme de queue de panache, ce qui est antithétique à un...

SEPM (Society for Sedimentary Geology) is an international not-for-profit Society based in Tulsa, Oklahoma. Through its network of international members, the Society is dedicated to the dissemination of scientific information on sedimentology, stratigraphy, paleontology, environmental sciences, marine geology, hydrogeology, and many additional related specialties. The Society supports members in their professional objectives by publication of two major scientific journals, the Journal of Sedimentary Research (JSR) and PALAIOS, in addition to producing technical conferences, short courses, and Special Publications. Through SEPM's Continuing Education, Publications, Meetings, and other programs, members can both gain and exchange information pertinent to their geologic specialties. For more information about SEPM, please visit www.sepm.org.

Fungi atau jamur merupakan tumbuhan yang tidak mempunyai klorofil sehingga bersifat heterotrof, tipe sel eukarotik. Jamur ada yang uniseluler dan multiseluler. Jenis jamur ada yang bisa dikonsumsi dan ada yang tidak bisa dikonsumsi. Pengenalan tipe jamur secara digital merupakan pendekatan yang mungkin dilakukan untuk memberikan informasi kepada masyarakat atau publik yang ingin mengetahui jamur mana yang aman untuk dikonsumsi dan yang tidak.Pada penelitian ini dilakukan klasifikasi jenis jamur dengan menggunakan input citra jamur. Langkah klasifikasi jenis jamur yang dilakukan dalam penelitian ini terdiri dari tiga langkah. Langkah pertama, yaitu Image Pre Processing, dilakukan dengan mengkonversi citra RGB ke grayscale dan membuat grafik histogramnya. Langkah kedua yaitu Ektraksi Fitur, dilakukan dengan mengimplementasikan metode statistic orde 1. Pada penelitian ini menggunakan metode statistic orde 1 dengan 5 parameter, yaitu mean, skewness, variance, kurtosis, dan entropy. Dan langkah ketiga, melakukan Klasifikasi dengan menggunakan metode Naïve Bayes Gaussian. Hasil pengujian terhadap 60 citra jamur yang telah dilakukan dengan metode cross validation dengan nikai k=4 didapatkan nilai akurasi sebesar 98.75%

Indonesia is one of the developing countries with the world's most abundant fruit and vegetable production. Indonesia is supported by geographical conditions that have two seasons, namely summer and rainy season. This condition causes fruits and vegetables to flourish in Indonesia. Fruit is a healthy food source for humans. Fruit is very beneficial for humans and contains lots of vitamins. The introduction of fruit benefits must be started early on from children. From the results of the pre-test, it found that there were still 32% of elementary school students who knew of the vitamins contained in the fruit. To overcome this, researchers made an educational game application for the introduction of fruit and vitamins based on Android. From the results of the post-test, 72% of students understood the type of vitamin on the fruit. From the results of this post-test, the application developed can help improve children's abilities by 39% from the prior state. In terms of application usability, get an average rating of 82%. Appraisal of application the five factors: understandability, learnability, operability, attractiveness, and usability compliance with the percentage values of 81%, 77%, 76%, 84%, and 93% respectively.