JORDBRUK

Sprekkesone m/intrusive ganger i Drammensgranitt kan gi mulighet for store vannmengder til jordbruksvanning.

Det skulle skaffes vann til vanning av ca. 10 dekar. Bergart rombeporfyr. Sprekk N-S, fall steilt vest, noe vest for husene. Boreplass vest for gammelt hus, skråboring mot vest.sydvest, ca. 50 grader fall. Alternativet er å benytte den bekken som renner vest for husene.

3 boringer i/ved sprekkesone i syenitt gir 500-1 000 l/t, hvilket er for lite til jordbruksvanning. Nye boringer i samme område vil neppe gi mer vann. Boringer andre steder i samme sprekksonen kan gi bedre resultater.

Rapporten framlegger resultatene fra prøveinnsamling, analysering og veksthus- forsøk av noen utvalgte bergarter og mineraler. Følgende bergartstyper og mineraler ble testet: Glimmerskifre fra Eikesdal, Budal og Sunndal. Gneis fra Bø i Vesterålen, og Lånke, Fyllit fra Framfjord. Grønnskifer fra Inderøy. Karbonatitt fra Stjernøy (2 stk.). Dolomittbreksje fra Leksvik. Biotitt, K- feltspat og avgang fra NORFLOAT. Flogopitt fra Ødegårdenverk. Leirskifer (Adularia) fra Ullapool i Skotland. For sammenligning ble det brukt kunstgjød- sel (KCI). Bergartenes totale K innhold varierte fra 0.4 til 10 %. Bergartene ble knust ned til < 0.3mm kornstørrelse. Til vekstforsøkene ble det brukt 6 rads bygg av type "Bamse". Vekstforsøkene ble utført med naturtorv i 7.5 l potter og alle pottene fikk en grunngjødsling med like mengder N, P, Mg, S, og mikronæring. Kalksteinsmjøl ble dosert for å holde nogen lunde lik i alle for- søk. Det ble utført 21 gjødslingsalternativer med 3 gjentak. Det var bergart- ene fra Stjernøy, Leksvik og Budal som ga de største avlingene. Gneisbergartene synes ikke å ha noen gjødslingsvirkning. Det fortsettes med frilandsforsøk for de mest interessante bergarter. Frie emneord: Steinmjøl, Veksthusforsøk, Økologisk landbruk, Planteernæring, Gjødselforsøk, Kalium

Rapporten beskriver de geologiske og mineralogiske forhold i Oksål steinbrudd på Inderøy. Bergarten er vurdert som interessant med tanke på produksjon av nedmalt steinmjøl til landbruket. Bergarten er en sterkt foldet og inhomogen fyllitisk skifer med sandige partier. Bergarten er tett gjennomsatt av kvartsrike årer. Mineraltellinger viser at bergarten har et gjennomsnittlig biotittinnhold på ca 11% og et kaliuminnhold som i representative prøver varierer fra 2.63 til 1.35 %. De tekniske og merkantile forutsetningene som må ligge til grunn for produksjon av nedmalt steinmjøl fra forekomsten anbefales vurdert.

REACH (Registration, Evaluation and Authorisation of Chemicals), the new European Chemicals Regulation was adopted in December 2006. It came into force on the 1st June 2007. REACH, as well as the pending EU Soil Protection Directive, require additional knowledge about "soil quality" at the European scale. The GEMAS (geochemical mapping of agricultural soils and grazing land of Europe) project aims at providing harmonized geochemical data of arable land and land under permanent grass cover at the continental, European scale. Geological Surveys in 34 European countries, covering an area of 5.6 million km2, have agreed to sample their territory at a sample density of 1 site each, arable land (0-20 cm) and land under permanent grass cover (0-10 cm), per 2500 km2. Sampling will take place during 2008, following a jointly agreed field protocol which is presented in this report. All samples will be prepared in just one laboratory, a strict quality control procedure has been established and all samples will always be jointly analyzed in just one laboratory for any one chemical element/parameter.

Rigorous quality control (QC) is one of the keystones to the success of any regional geochemical mapping programme. For the EuroGeoSurveys (EGS) GEMAS (Geochemical mapping of agricultural and grazing land soils) project 2211 samples (including field duplicates) of agricultural soil (Ap, Ap-horizon, 0-20cm) and 2118 samples (including field duplicates) from land under permanent grass cover ("grazing land" - Gr, topsoil 0-10 cm) were collected from a large part of Europe, centrally prepared (air dried, sieved to <2 mm, homogenised and split into sub-samples) and randomised prior to being sent out to contract laboratories. QC consisted of (1) collection of a field duplicate at a rate of 1 in 20 field samples, (2) preparation of two large project standards ("Ap" and "Gr") for insertion between the routine project samples, (3) preparation of ananalytical replicate from each field duplicate and (4) randomisation of all samples prior to analysis.
Here QC-results covering analysis of 53 chemical elements (Ag, Al, As, Au, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, Hg, In, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, P, Pb, Pd, Pt, Rb, Re, S, Sb, Sc, Se, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Zn, Zr), following an aqua regia extraction on a 15 g aliquot per sample of both sample materials, are reported. Practical detection limits and precision, as well as the analytical results for the two project standards Ap and Gr are provided for all 53 elements. All analyses were carried out within twenty days at ACME laboratories in Vancouver, Canada. No serious quality problems, other than a few occasional outliers for a number of elements (B, Ca, Cu, S and Sn) were detected, and the analytical results were accepted after investigating the reasons for these outliers.

Evaluation of quality control results of total C and S, total organic carbon (TOC), cation exchange capacity (CEC), XRF, pH, and particle size distribution (PSD) analysis.
Rigorous quality control (QC) is one of the keystones to the success of any regional geochemical mapping programme. For the EuroGeoSurveys (EGS) GEMAS (Geochemical mapping of agricultural and grazing land soils) project 2211 samples (including field duplicates) of agricultural soil (Ap, Ap-horizon, 0-20 cm) and 2118 samples (including field duplicates) from land under permanent grass cover ("grazing land" -Gr, topsoil 0-10 cm) were collected from a large part of Europe, centrally prepared (air dried, sieved to <2 mm, homogenised and split into sub-samples) and randomised prior to being sent out to contract laboratories. QC consisted of (1) collection of a field duplicate at a rate of 1 in 20 field samples, (2) preparation of two large project standards ("Ap" and "Gr") for insertion between the routine project samples, (3) preparation of an analytical replicate from each field duplicate and (4) randomisation of all samples prior to analysis.